Home / 498,023.10-687,202.56-283,139.42

Finding the Fourth Proportional to 498,023.10, 687,202.56 and 283,139.42

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Solution

The fourth proportional to 498,023.10, 687,202.56 and 283,139.42 is: 390,692.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,023.10 : 687,202.56 = 283,139.42 : x
  2. Step 2: Convert to fraction form
    498,023.10/687,202.56 = 283,139.42/x
  3. Step 3: Cross multiply
    498,023.10x = 687,202.56 × 283,139.42
  4. Step 4: Simplify right side
    498,023.10x = 194,574,130,824.90
  5. Step 5: Solve for x
    x = 194,574,130,824.90/498,023.10
  6. Step 6: Final answer
    x = 390,692.98

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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.