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Finding the Fourth Proportional to 390,079.80, 584,244.90 and 390,079.80

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Solution

The fourth proportional to 390,079.80, 584,244.90 and 390,079.80 is: 584,244.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,079.80 : 584,244.90 = 390,079.80 : x
  2. Step 2: Convert to fraction form
    390,079.80/584,244.90 = 390,079.80/x
  3. Step 3: Cross multiply
    390,079.80x = 584,244.90 × 390,079.80
  4. Step 4: Simplify right side
    390,079.80x = 227,902,133,743.02
  5. Step 5: Solve for x
    x = 227,902,133,743.02/390,079.80
  6. Step 6: Final answer
    x = 584,244.90

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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.