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Finding the Fourth Proportional to 587,787.40, 881,681.10 and 307,390.60

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Solution

The fourth proportional to 587,787.40, 881,681.10 and 307,390.60 is: 461,085.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,787.40 : 881,681.10 = 307,390.60 : x
  2. Step 2: Convert to fraction form
    587,787.40/881,681.10 = 307,390.60/x
  3. Step 3: Cross multiply
    587,787.40x = 881,681.10 × 307,390.60
  4. Step 4: Simplify right side
    587,787.40x = 271,020,482,337.66
  5. Step 5: Solve for x
    x = 271,020,482,337.66/587,787.40
  6. Step 6: Final answer
    x = 461,085.90

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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.