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Finding the Fourth Proportional to 578,130.30, 867,195.45 and 365,553.90

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Solution

The fourth proportional to 578,130.30, 867,195.45 and 365,553.90 is: 548,330.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,130.30 : 867,195.45 = 365,553.90 : x
  2. Step 2: Convert to fraction form
    578,130.30/867,195.45 = 365,553.90/x
  3. Step 3: Cross multiply
    578,130.30x = 867,195.45 × 365,553.90
  4. Step 4: Simplify right side
    578,130.30x = 317,006,678,809.76
  5. Step 5: Solve for x
    x = 317,006,678,809.76/578,130.30
  6. Step 6: Final answer
    x = 548,330.85

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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.