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Finding the Fourth Proportional to 656,574.54, 906,244.92 and 427,759.80

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Solution

The fourth proportional to 656,574.54, 906,244.92 and 427,759.80 is: 590,420.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,574.54 : 906,244.92 = 427,759.80 : x
  2. Step 2: Convert to fraction form
    656,574.54/906,244.92 = 427,759.80/x
  3. Step 3: Cross multiply
    656,574.54x = 906,244.92 × 427,759.80
  4. Step 4: Simplify right side
    656,574.54x = 387,655,145,730.22
  5. Step 5: Solve for x
    x = 387,655,145,730.22/656,574.54
  6. Step 6: Final answer
    x = 590,420.62

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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.