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Finding the Fourth Proportional to 480,716.66, 719,854.69 and 288,470.21

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Solution

The fourth proportional to 480,716.66, 719,854.69 and 288,470.21 is: 431,973.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,716.66 : 719,854.69 = 288,470.21 : x
  2. Step 2: Convert to fraction form
    480,716.66/719,854.69 = 288,470.21/x
  3. Step 3: Cross multiply
    480,716.66x = 719,854.69 × 288,470.21
  4. Step 4: Simplify right side
    480,716.66x = 207,656,637,103.74
  5. Step 5: Solve for x
    x = 207,656,637,103.74/480,716.66
  6. Step 6: Final answer
    x = 431,973.04

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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.