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Finding the Fourth Proportional to 662,567.72, 992,597.70 and 391,885.16

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Solution

The fourth proportional to 662,567.72, 992,597.70 and 391,885.16 is: 587,086.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,567.72 : 992,597.70 = 391,885.16 : x
  2. Step 2: Convert to fraction form
    662,567.72/992,597.70 = 391,885.16/x
  3. Step 3: Cross multiply
    662,567.72x = 992,597.70 × 391,885.16
  4. Step 4: Simplify right side
    662,567.72x = 388,984,308,480.13
  5. Step 5: Solve for x
    x = 388,984,308,480.13/662,567.72
  6. Step 6: Final answer
    x = 587,086.11

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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.