Home / 523,581,801.28-722,547,759.36-288,640,869.12

Finding the Fourth Proportional to 523,581,801.28, 722,547,759.36 and 288,640,869.12

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Solution

The fourth proportional to 523,581,801.28, 722,547,759.36 and 288,640,869.12 is: 398,327,086.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,581,801.28 : 722,547,759.36 = 288,640,869.12 : x
  2. Step 2: Convert to fraction form
    523,581,801.28/722,547,759.36 = 288,640,869.12/x
  3. Step 3: Cross multiply
    523,581,801.28x = 722,547,759.36 × 288,640,869.12
  4. Step 4: Simplify right side
    523,581,801.28x = 208,556,813,242,379,008
  5. Step 5: Solve for x
    x = 208,556,813,242,379,008/523,581,801.28
  6. Step 6: Final answer
    x = 398,327,086.11

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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.