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Finding the Fourth Proportional to 710,815.20, 1,064,149.20 and 636,165.60

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Solution

The fourth proportional to 710,815.20, 1,064,149.20 and 636,165.60 is: 952,392.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,815.20 : 1,064,149.20 = 636,165.60 : x
  2. Step 2: Convert to fraction form
    710,815.20/1,064,149.20 = 636,165.60/x
  3. Step 3: Cross multiply
    710,815.20x = 1,064,149.20 × 636,165.60
  4. Step 4: Simplify right side
    710,815.20x = 676,975,114,307.52
  5. Step 5: Solve for x
    x = 676,975,114,307.52/710,815.20
  6. Step 6: Final answer
    x = 952,392.57

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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.