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Finding the Fourth Proportional to 610,666.12, 916,562.94 and 440,065

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Solution

The fourth proportional to 610,666.12, 916,562.94 and 440,065 is: 660,503.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,666.12 : 916,562.94 = 440,065 : x
  2. Step 2: Convert to fraction form
    610,666.12/916,562.94 = 440,065/x
  3. Step 3: Cross multiply
    610,666.12x = 916,562.94 × 440,065
  4. Step 4: Simplify right side
    610,666.12x = 403,347,270,191.10
  5. Step 5: Solve for x
    x = 403,347,270,191.10/610,666.12
  6. Step 6: Final answer
    x = 660,503.76

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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.