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Finding the Fourth Proportional to 660,987.40, 912,160.14 and 374,562.28

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Solution

The fourth proportional to 660,987.40, 912,160.14 and 374,562.28 is: 516,894.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,987.40 : 912,160.14 = 374,562.28 : x
  2. Step 2: Convert to fraction form
    660,987.40/912,160.14 = 374,562.28/x
  3. Step 3: Cross multiply
    660,987.40x = 912,160.14 × 374,562.28
  4. Step 4: Simplify right side
    660,987.40x = 341,660,781,763.52
  5. Step 5: Solve for x
    x = 341,660,781,763.52/660,987.40
  6. Step 6: Final answer
    x = 516,894.55

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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.