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Finding the Fourth Proportional to 542,256.40, 813,384.60 and 437,280.40

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Solution

The fourth proportional to 542,256.40, 813,384.60 and 437,280.40 is: 655,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,256.40 : 813,384.60 = 437,280.40 : x
  2. Step 2: Convert to fraction form
    542,256.40/813,384.60 = 437,280.40/x
  3. Step 3: Cross multiply
    542,256.40x = 813,384.60 × 437,280.40
  4. Step 4: Simplify right side
    542,256.40x = 355,677,143,241.84
  5. Step 5: Solve for x
    x = 355,677,143,241.84/542,256.40
  6. Step 6: Final answer
    x = 655,920.60

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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.