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Finding the Fourth Proportional to 480,500.49, 662,271.89 and 439,776.57

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Solution

The fourth proportional to 480,500.49, 662,271.89 and 439,776.57 is: 606,142.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,500.49 : 662,271.89 = 439,776.57 : x
  2. Step 2: Convert to fraction form
    480,500.49/662,271.89 = 439,776.57/x
  3. Step 3: Cross multiply
    480,500.49x = 662,271.89 × 439,776.57
  4. Step 4: Simplify right side
    480,500.49x = 291,251,660,191.62
  5. Step 5: Solve for x
    x = 291,251,660,191.62/480,500.49
  6. Step 6: Final answer
    x = 606,142.28

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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.