Home / 916,687.54-1,265,019.21-508,792.90

Finding the Fourth Proportional to 916,687.54, 1,265,019.21 and 508,792.90

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Solution

The fourth proportional to 916,687.54, 1,265,019.21 and 508,792.90 is: 702,128.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,687.54 : 1,265,019.21 = 508,792.90 : x
  2. Step 2: Convert to fraction form
    916,687.54/1,265,019.21 = 508,792.90/x
  3. Step 3: Cross multiply
    916,687.54x = 1,265,019.21 × 508,792.90
  4. Step 4: Simplify right side
    916,687.54x = 643,632,792,411.61
  5. Step 5: Solve for x
    x = 643,632,792,411.61/916,687.54
  6. Step 6: Final answer
    x = 702,128.88

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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.