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Finding the Fourth Proportional to 662,829.80, 915,044.58 and 449,095.40

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Solution

The fourth proportional to 662,829.80, 915,044.58 and 449,095.40 is: 619,981.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,829.80 : 915,044.58 = 449,095.40 : x
  2. Step 2: Convert to fraction form
    662,829.80/915,044.58 = 449,095.40/x
  3. Step 3: Cross multiply
    662,829.80x = 915,044.58 × 449,095.40
  4. Step 4: Simplify right side
    662,829.80x = 410,942,311,672.93
  5. Step 5: Solve for x
    x = 410,942,311,672.93/662,829.80
  6. Step 6: Final answer
    x = 619,981.65

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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.