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Finding the Fourth Proportional to 585,215.80, 877,236.18 and 398,315.32

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Solution

The fourth proportional to 585,215.80, 877,236.18 and 398,315.32 is: 597,073.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,215.80 : 877,236.18 = 398,315.32 : x
  2. Step 2: Convert to fraction form
    585,215.80/877,236.18 = 398,315.32/x
  3. Step 3: Cross multiply
    585,215.80x = 877,236.18 × 398,315.32
  4. Step 4: Simplify right side
    585,215.80x = 349,416,609,752.28
  5. Step 5: Solve for x
    x = 349,416,609,752.28/585,215.80
  6. Step 6: Final answer
    x = 597,073.10

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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.