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Finding the Fourth Proportional to 652,034.10, 978,051.15 and 518,189.70

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Solution

The fourth proportional to 652,034.10, 978,051.15 and 518,189.70 is: 777,284.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,034.10 : 978,051.15 = 518,189.70 : x
  2. Step 2: Convert to fraction form
    652,034.10/978,051.15 = 518,189.70/x
  3. Step 3: Cross multiply
    652,034.10x = 978,051.15 × 518,189.70
  4. Step 4: Simplify right side
    652,034.10x = 506,816,032,003.16
  5. Step 5: Solve for x
    x = 506,816,032,003.16/652,034.10
  6. Step 6: Final answer
    x = 777,284.55

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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.