Home / 765,646.92-1,147,759.72-338,955.12

Finding the Fourth Proportional to 765,646.92, 1,147,759.72 and 338,955.12

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Solution

The fourth proportional to 765,646.92, 1,147,759.72 and 338,955.12 is: 508,118.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,646.92 : 1,147,759.72 = 338,955.12 : x
  2. Step 2: Convert to fraction form
    765,646.92/1,147,759.72 = 338,955.12/x
  3. Step 3: Cross multiply
    765,646.92x = 1,147,759.72 × 338,955.12
  4. Step 4: Simplify right side
    765,646.92x = 389,039,033,623.77
  5. Step 5: Solve for x
    x = 389,039,033,623.77/765,646.92
  6. Step 6: Final answer
    x = 508,118.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.