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Finding the Fourth Proportional to 652,030.60, 978,045.90 and 518,186.20

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Solution

The fourth proportional to 652,030.60, 978,045.90 and 518,186.20 is: 777,279.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,030.60 : 978,045.90 = 518,186.20 : x
  2. Step 2: Convert to fraction form
    652,030.60/978,045.90 = 518,186.20/x
  3. Step 3: Cross multiply
    652,030.60x = 978,045.90 × 518,186.20
  4. Step 4: Simplify right side
    652,030.60x = 506,809,888,346.58
  5. Step 5: Solve for x
    x = 506,809,888,346.58/652,030.60
  6. Step 6: Final answer
    x = 777,279.30

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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.