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Finding the Fourth Proportional to 610,665.80, 915,998.70 and 543,014.60

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Solution

The fourth proportional to 610,665.80, 915,998.70 and 543,014.60 is: 814,521.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,665.80 : 915,998.70 = 543,014.60 : x
  2. Step 2: Convert to fraction form
    610,665.80/915,998.70 = 543,014.60/x
  3. Step 3: Cross multiply
    610,665.80x = 915,998.70 × 543,014.60
  4. Step 4: Simplify right side
    610,665.80x = 497,400,667,681.02
  5. Step 5: Solve for x
    x = 497,400,667,681.02/610,665.80
  6. Step 6: Final answer
    x = 814,521.90

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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.