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Finding the Fourth Proportional to 480,807.80, 663,306.24 and 289,712.60

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Solution

The fourth proportional to 480,807.80, 663,306.24 and 289,712.60 is: 399,677.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,807.80 : 663,306.24 = 289,712.60 : x
  2. Step 2: Convert to fraction form
    480,807.80/663,306.24 = 289,712.60/x
  3. Step 3: Cross multiply
    480,807.80x = 663,306.24 × 289,712.60
  4. Step 4: Simplify right side
    480,807.80x = 192,168,175,386.62
  5. Step 5: Solve for x
    x = 192,168,175,386.62/480,807.80
  6. Step 6: Final answer
    x = 399,677.74

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1.5x scale

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.