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Finding the Fourth Proportional to 610,666.30, 915,999.45 and 543,015.10

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Solution

The fourth proportional to 610,666.30, 915,999.45 and 543,015.10 is: 814,522.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,666.30 : 915,999.45 = 543,015.10 : x
  2. Step 2: Convert to fraction form
    610,666.30/915,999.45 = 543,015.10/x
  3. Step 3: Cross multiply
    610,666.30x = 915,999.45 × 543,015.10
  4. Step 4: Simplify right side
    610,666.30x = 497,401,532,941.70
  5. Step 5: Solve for x
    x = 497,401,532,941.70/610,666.30
  6. Step 6: Final answer
    x = 814,522.65

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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.