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Finding the Fourth Proportional to 739,803.60, 1,107,737.10 and 472,114.80

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Solution

The fourth proportional to 739,803.60, 1,107,737.10 and 472,114.80 is: 706,916.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,803.60 : 1,107,737.10 = 472,114.80 : x
  2. Step 2: Convert to fraction form
    739,803.60/1,107,737.10 = 472,114.80/x
  3. Step 3: Cross multiply
    739,803.60x = 1,107,737.10 × 472,114.80
  4. Step 4: Simplify right side
    739,803.60x = 522,979,079,419.08
  5. Step 5: Solve for x
    x = 522,979,079,419.08/739,803.60
  6. Step 6: Final answer
    x = 706,916.11

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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.