Home / 1,058,543.28-1,587,812.49-459,426.78

Finding the Fourth Proportional to 1,058,543.28, 1,587,812.49 and 459,426.78

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Solution

The fourth proportional to 1,058,543.28, 1,587,812.49 and 459,426.78 is: 689,139.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,058,543.28 : 1,587,812.49 = 459,426.78 : x
  2. Step 2: Convert to fraction form
    1,058,543.28/1,587,812.49 = 459,426.78/x
  3. Step 3: Cross multiply
    1,058,543.28x = 1,587,812.49 × 459,426.78
  4. Step 4: Simplify right side
    1,058,543.28x = 729,483,579,524.48
  5. Step 5: Solve for x
    x = 729,483,579,524.48/1,058,543.28
  6. Step 6: Final answer
    x = 689,139.12

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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.