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Finding the Fourth Proportional to 586,405.10, 809,325.88 and 371,565.18

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Solution

The fourth proportional to 586,405.10, 809,325.88 and 371,565.18 is: 512,814.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,405.10 : 809,325.88 = 371,565.18 : x
  2. Step 2: Convert to fraction form
    586,405.10/809,325.88 = 371,565.18/x
  3. Step 3: Cross multiply
    586,405.10x = 809,325.88 × 371,565.18
  4. Step 4: Simplify right side
    586,405.10x = 300,717,316,280.86
  5. Step 5: Solve for x
    x = 300,717,316,280.86/586,405.10
  6. Step 6: Final answer
    x = 512,814.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.