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Finding the Fourth Proportional to 578,038.60, 867,057.90 and 538,672.60

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Solution

The fourth proportional to 578,038.60, 867,057.90 and 538,672.60 is: 808,008.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,038.60 : 867,057.90 = 538,672.60 : x
  2. Step 2: Convert to fraction form
    578,038.60/867,057.90 = 538,672.60/x
  3. Step 3: Cross multiply
    578,038.60x = 867,057.90 × 538,672.60
  4. Step 4: Simplify right side
    578,038.60x = 467,060,333,343.54
  5. Step 5: Solve for x
    x = 467,060,333,343.54/578,038.60
  6. Step 6: Final answer
    x = 808,008.90

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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.