Home / 724,218.16-999,541.20-422,412.16

Finding the Fourth Proportional to 724,218.16, 999,541.20 and 422,412.16

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Solution

The fourth proportional to 724,218.16, 999,541.20 and 422,412.16 is: 582,998.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,218.16 : 999,541.20 = 422,412.16 : x
  2. Step 2: Convert to fraction form
    724,218.16/999,541.20 = 422,412.16/x
  3. Step 3: Cross multiply
    724,218.16x = 999,541.20 × 422,412.16
  4. Step 4: Simplify right side
    724,218.16x = 422,218,357,300.99
  5. Step 5: Solve for x
    x = 422,218,357,300.99/724,218.16
  6. Step 6: Final answer
    x = 582,998.85

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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.