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Finding the Fourth Proportional to 713,959.80, 1,072,689.30 and 536,812.80

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Solution

The fourth proportional to 713,959.80, 1,072,689.30 and 536,812.80 is: 806,534.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,959.80 : 1,072,689.30 = 536,812.80 : x
  2. Step 2: Convert to fraction form
    713,959.80/1,072,689.30 = 536,812.80/x
  3. Step 3: Cross multiply
    713,959.80x = 1,072,689.30 × 536,812.80
  4. Step 4: Simplify right side
    713,959.80x = 575,833,346,663.04
  5. Step 5: Solve for x
    x = 575,833,346,663.04/713,959.80
  6. Step 6: Final answer
    x = 806,534.69

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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.