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Finding the Fourth Proportional to 584,429.10, 876,643.65 and 318,708.60

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Solution

The fourth proportional to 584,429.10, 876,643.65 and 318,708.60 is: 478,062.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,429.10 : 876,643.65 = 318,708.60 : x
  2. Step 2: Convert to fraction form
    584,429.10/876,643.65 = 318,708.60/x
  3. Step 3: Cross multiply
    584,429.10x = 876,643.65 × 318,708.60
  4. Step 4: Simplify right side
    584,429.10x = 279,393,870,390.39
  5. Step 5: Solve for x
    x = 279,393,870,390.39/584,429.10
  6. Step 6: Final answer
    x = 478,062.90

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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.