Home / 916,711.77-1,265,043.18-508,789.68

Finding the Fourth Proportional to 916,711.77, 1,265,043.18 and 508,789.68

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Solution

The fourth proportional to 916,711.77, 1,265,043.18 and 508,789.68 is: 702,119.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,711.77 : 1,265,043.18 = 508,789.68 : x
  2. Step 2: Convert to fraction form
    916,711.77/1,265,043.18 = 508,789.68/x
  3. Step 3: Cross multiply
    916,711.77x = 1,265,043.18 × 508,789.68
  4. Step 4: Simplify right side
    916,711.77x = 643,640,914,738.38
  5. Step 5: Solve for x
    x = 643,640,914,738.38/916,711.77
  6. Step 6: Final answer
    x = 702,119.18

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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.