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Finding the Fourth Proportional to 581,492.71, 802,342.31 and 339,728.58

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Solution

The fourth proportional to 581,492.71, 802,342.31 and 339,728.58 is: 468,756.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,492.71 : 802,342.31 = 339,728.58 : x
  2. Step 2: Convert to fraction form
    581,492.71/802,342.31 = 339,728.58/x
  3. Step 3: Cross multiply
    581,492.71x = 802,342.31 × 339,728.58
  4. Step 4: Simplify right side
    581,492.71x = 272,578,613,650.22
  5. Step 5: Solve for x
    x = 272,578,613,650.22/581,492.71
  6. Step 6: Final answer
    x = 468,756.72

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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.