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Finding the Fourth Proportional to 673,070.31, 930,046.61 and 511,645.10

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Solution

The fourth proportional to 673,070.31, 930,046.61 and 511,645.10 is: 706,989.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,070.31 : 930,046.61 = 511,645.10 : x
  2. Step 2: Convert to fraction form
    673,070.31/930,046.61 = 511,645.10/x
  3. Step 3: Cross multiply
    673,070.31x = 930,046.61 × 511,645.10
  4. Step 4: Simplify right side
    673,070.31x = 475,853,788,219.89
  5. Step 5: Solve for x
    x = 475,853,788,219.89/673,070.31
  6. Step 6: Final answer
    x = 706,989.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.