Home / 656,948.56-906,734.12-427,105.84

Finding the Fourth Proportional to 656,948.56, 906,734.12 and 427,105.84

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Solution

The fourth proportional to 656,948.56, 906,734.12 and 427,105.84 is: 589,500.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,948.56 : 906,734.12 = 427,105.84 : x
  2. Step 2: Convert to fraction form
    656,948.56/906,734.12 = 427,105.84/x
  3. Step 3: Cross multiply
    656,948.56x = 906,734.12 × 427,105.84
  4. Step 4: Simplify right side
    656,948.56x = 387,271,437,979.26
  5. Step 5: Solve for x
    x = 387,271,437,979.26/656,948.56
  6. Step 6: Final answer
    x = 589,500.40

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Double scale
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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.