Home / 1,200,009-1,656,046.98-663,499.56

Finding the Fourth Proportional to 1,200,009, 1,656,046.98 and 663,499.56

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Solution

The fourth proportional to 1,200,009, 1,656,046.98 and 663,499.56 is: 915,648.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,009 : 1,656,046.98 = 663,499.56 : x
  2. Step 2: Convert to fraction form
    1,200,009/1,656,046.98 = 663,499.56/x
  3. Step 3: Cross multiply
    1,200,009x = 1,656,046.98 × 663,499.56
  4. Step 4: Simplify right side
    1,200,009x = 1,098,786,442,569.33
  5. Step 5: Solve for x
    x = 1,098,786,442,569.33/1,200,009
  6. Step 6: Final answer
    x = 915,648.50

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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.