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Finding the Fourth Proportional to 658,276.90, 987,415.35 and 606,955.30

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Solution

The fourth proportional to 658,276.90, 987,415.35 and 606,955.30 is: 910,432.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,276.90 : 987,415.35 = 606,955.30 : x
  2. Step 2: Convert to fraction form
    658,276.90/987,415.35 = 606,955.30/x
  3. Step 3: Cross multiply
    658,276.90x = 987,415.35 × 606,955.30
  4. Step 4: Simplify right side
    658,276.90x = 599,316,979,983.86
  5. Step 5: Solve for x
    x = 599,316,979,983.86/658,276.90
  6. Step 6: Final answer
    x = 910,432.95

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Double scale
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Similar ratio
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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.