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Finding the Fourth Proportional to 660,030.20, 988,295.70 and 520,062.20

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Solution

The fourth proportional to 660,030.20, 988,295.70 and 520,062.20 is: 778,714.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,030.20 : 988,295.70 = 520,062.20 : x
  2. Step 2: Convert to fraction form
    660,030.20/988,295.70 = 520,062.20/x
  3. Step 3: Cross multiply
    660,030.20x = 988,295.70 × 520,062.20
  4. Step 4: Simplify right side
    660,030.20x = 513,975,235,992.54
  5. Step 5: Solve for x
    x = 513,975,235,992.54/660,030.20
  6. Step 6: Final answer
    x = 778,714.73

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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.