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Finding the Fourth Proportional to 661,306.80, 912,539.40 and 370,929.84

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Solution

The fourth proportional to 661,306.80, 912,539.40 and 370,929.84 is: 511,847.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,306.80 : 912,539.40 = 370,929.84 : x
  2. Step 2: Convert to fraction form
    661,306.80/912,539.40 = 370,929.84/x
  3. Step 3: Cross multiply
    661,306.80x = 912,539.40 × 370,929.84
  4. Step 4: Simplify right side
    661,306.80x = 338,488,093,635.70
  5. Step 5: Solve for x
    x = 338,488,093,635.70/661,306.80
  6. Step 6: Final answer
    x = 511,847.29

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1.5x scale

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.