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Finding the Fourth Proportional to 661,331.07, 912,708.18 and 374,820.39

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Solution

The fourth proportional to 661,331.07, 912,708.18 and 374,820.39 is: 517,292.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,331.07 : 912,708.18 = 374,820.39 : x
  2. Step 2: Convert to fraction form
    661,331.07/912,708.18 = 374,820.39/x
  3. Step 3: Cross multiply
    661,331.07x = 912,708.18 × 374,820.39
  4. Step 4: Simplify right side
    661,331.07x = 342,101,635,983.79
  5. Step 5: Solve for x
    x = 342,101,635,983.79/661,331.07
  6. Step 6: Final answer
    x = 517,292.55

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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.