Home / 2,178,970,208.58-3,006,730,572.06-1,226,166,911.58

Finding the Fourth Proportional to 2,178,970,208.58, 3,006,730,572.06 and 1,226,166,911.58

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Solution

The fourth proportional to 2,178,970,208.58, 3,006,730,572.06 and 1,226,166,911.58 is: 1,691,970,603.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178,970,208.58 : 3,006,730,572.06 = 1,226,166,911.58 : x
  2. Step 2: Convert to fraction form
    2,178,970,208.58/3,006,730,572.06 = 1,226,166,911.58/x
  3. Step 3: Cross multiply
    2,178,970,208.58x = 3,006,730,572.06 × 1,226,166,911.58
  4. Step 4: Simplify right side
    2,178,970,208.58x = 3,686,753,539,495,976,448
  5. Step 5: Solve for x
    x = 3,686,753,539,495,976,448/2,178,970,208.58
  6. Step 6: Final answer
    x = 1,691,970,603.81

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Double scale
Find fourth proportional to 2,178,970,209.58, 3,006,730,573.44 and 1,226,166,912.58
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.