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Finding the Fourth Proportional to 640,700.48, 884,168.16 and 368,785.28

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Solution

The fourth proportional to 640,700.48, 884,168.16 and 368,785.28 is: 508,924.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,700.48 : 884,168.16 = 368,785.28 : x
  2. Step 2: Convert to fraction form
    640,700.48/884,168.16 = 368,785.28/x
  3. Step 3: Cross multiply
    640,700.48x = 884,168.16 × 368,785.28
  4. Step 4: Simplify right side
    640,700.48x = 326,068,202,452.69
  5. Step 5: Solve for x
    x = 326,068,202,452.69/640,700.48
  6. Step 6: Final answer
    x = 508,924.55

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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.