Home / 442,922.40-664,383.60-425,426.40

Finding the Fourth Proportional to 442,922.40, 664,383.60 and 425,426.40

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Solution

The fourth proportional to 442,922.40, 664,383.60 and 425,426.40 is: 638,139.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,922.40 : 664,383.60 = 425,426.40 : x
  2. Step 2: Convert to fraction form
    442,922.40/664,383.60 = 425,426.40/x
  3. Step 3: Cross multiply
    442,922.40x = 664,383.60 × 425,426.40
  4. Step 4: Simplify right side
    442,922.40x = 282,646,323,167.04
  5. Step 5: Solve for x
    x = 282,646,323,167.04/442,922.40
  6. Step 6: Final answer
    x = 638,139.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.