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Finding the Fourth Proportional to 657,987.08, 987,281.10 and 358,017.80

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Solution

The fourth proportional to 657,987.08, 987,281.10 and 358,017.80 is: 537,190.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,987.08 : 987,281.10 = 358,017.80 : x
  2. Step 2: Convert to fraction form
    657,987.08/987,281.10 = 358,017.80/x
  3. Step 3: Cross multiply
    657,987.08x = 987,281.10 × 358,017.80
  4. Step 4: Simplify right side
    657,987.08x = 353,464,207,403.58
  5. Step 5: Solve for x
    x = 353,464,207,403.58/657,987.08
  6. Step 6: Final answer
    x = 537,190.19

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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.