Home / 1,247,429,648.76-1,721,177,705.40-738,539,674.32

Finding the Fourth Proportional to 1,247,429,648.76, 1,721,177,705.40 and 738,539,674.32

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Solution

The fourth proportional to 1,247,429,648.76, 1,721,177,705.40 and 738,539,674.32 is: 1,019,021,812.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,429,648.76 : 1,721,177,705.40 = 738,539,674.32 : x
  2. Step 2: Convert to fraction form
    1,247,429,648.76/1,721,177,705.40 = 738,539,674.32/x
  3. Step 3: Cross multiply
    1,247,429,648.76x = 1,721,177,705.40 × 738,539,674.32
  4. Step 4: Simplify right side
    1,247,429,648.76x = 1,271,158,021,992,961,024
  5. Step 5: Solve for x
    x = 1,271,158,021,992,961,024/1,247,429,648.76
  6. Step 6: Final answer
    x = 1,019,021,812.78

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Double scale
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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.