Home / 498,430.11-687,849.12-283,601.10

Finding the Fourth Proportional to 498,430.11, 687,849.12 and 283,601.10

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Solution

The fourth proportional to 498,430.11, 687,849.12 and 283,601.10 is: 391,378.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,430.11 : 687,849.12 = 283,601.10 : x
  2. Step 2: Convert to fraction form
    498,430.11/687,849.12 = 283,601.10/x
  3. Step 3: Cross multiply
    498,430.11x = 687,849.12 × 283,601.10
  4. Step 4: Simplify right side
    498,430.11x = 195,074,767,066.03
  5. Step 5: Solve for x
    x = 195,074,767,066.03/498,430.11
  6. Step 6: Final answer
    x = 391,378.38

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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.