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Finding the Fourth Proportional to 584,869.40, 876,866.70 and 318,930.20

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Solution

The fourth proportional to 584,869.40, 876,866.70 and 318,930.20 is: 478,156.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,869.40 : 876,866.70 = 318,930.20 : x
  2. Step 2: Convert to fraction form
    584,869.40/876,866.70 = 318,930.20/x
  3. Step 3: Cross multiply
    584,869.40x = 876,866.70 × 318,930.20
  4. Step 4: Simplify right side
    584,869.40x = 279,659,272,004.34
  5. Step 5: Solve for x
    x = 279,659,272,004.34/584,869.40
  6. Step 6: Final answer
    x = 478,156.79

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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.