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Finding the Fourth Proportional to 661,335.08, 912,713.70 and 374,824.40

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Solution

The fourth proportional to 661,335.08, 912,713.70 and 374,824.40 is: 517,298.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,335.08 : 912,713.70 = 374,824.40 : x
  2. Step 2: Convert to fraction form
    661,335.08/912,713.70 = 374,824.40/x
  3. Step 3: Cross multiply
    661,335.08x = 912,713.70 × 374,824.40
  4. Step 4: Simplify right side
    661,335.08x = 342,107,364,974.28
  5. Step 5: Solve for x
    x = 342,107,364,974.28/661,335.08
  6. Step 6: Final answer
    x = 517,298.08

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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.