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Finding the Fourth Proportional to 660,269.40, 987,779.70 and 572,497.80

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Solution

The fourth proportional to 660,269.40, 987,779.70 and 572,497.80 is: 856,471.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,269.40 : 987,779.70 = 572,497.80 : x
  2. Step 2: Convert to fraction form
    660,269.40/987,779.70 = 572,497.80/x
  3. Step 3: Cross multiply
    660,269.40x = 987,779.70 × 572,497.80
  4. Step 4: Simplify right side
    660,269.40x = 565,501,705,134.66
  5. Step 5: Solve for x
    x = 565,501,705,134.66/660,269.40
  6. Step 6: Final answer
    x = 856,471.17

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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.