Home / 387,699,119.28-581,553,713.88-128,914,328.52

Finding the Fourth Proportional to 387,699,119.28, 581,553,713.88 and 128,914,328.52

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Solution

The fourth proportional to 387,699,119.28, 581,553,713.88 and 128,914,328.52 is: 193,373,166.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,699,119.28 : 581,553,713.88 = 128,914,328.52 : x
  2. Step 2: Convert to fraction form
    387,699,119.28/581,553,713.88 = 128,914,328.52/x
  3. Step 3: Cross multiply
    387,699,119.28x = 581,553,713.88 × 128,914,328.52
  4. Step 4: Simplify right side
    387,699,119.28x = 74,970,606,523,152,400
  5. Step 5: Solve for x
    x = 74,970,606,523,152,400/387,699,119.28
  6. Step 6: Final answer
    x = 193,373,166.96

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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.