Home / 581,418.16-802,129.28-428,822.64

Finding the Fourth Proportional to 581,418.16, 802,129.28 and 428,822.64

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Solution

The fourth proportional to 581,418.16, 802,129.28 and 428,822.64 is: 591,607.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,418.16 : 802,129.28 = 428,822.64 : x
  2. Step 2: Convert to fraction form
    581,418.16/802,129.28 = 428,822.64/x
  3. Step 3: Cross multiply
    581,418.16x = 802,129.28 × 428,822.64
  4. Step 4: Simplify right side
    581,418.16x = 343,971,195,470.90
  5. Step 5: Solve for x
    x = 343,971,195,470.90/581,418.16
  6. Step 6: Final answer
    x = 591,607.24

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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.