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Finding the Fourth Proportional to 670,710.90, 1,006,221.90 and 351,036.54

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Solution

The fourth proportional to 670,710.90, 1,006,221.90 and 351,036.54 is: 526,636.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,710.90 : 1,006,221.90 = 351,036.54 : x
  2. Step 2: Convert to fraction form
    670,710.90/1,006,221.90 = 351,036.54/x
  3. Step 3: Cross multiply
    670,710.90x = 1,006,221.90 × 351,036.54
  4. Step 4: Simplify right side
    670,710.90x = 353,220,654,248.23
  5. Step 5: Solve for x
    x = 353,220,654,248.23/670,710.90
  6. Step 6: Final answer
    x = 526,636.22

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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.