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Finding the Fourth Proportional to 516,400.80, 774,601.20 and 480,971.40

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Solution

The fourth proportional to 516,400.80, 774,601.20 and 480,971.40 is: 721,457.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,400.80 : 774,601.20 = 480,971.40 : x
  2. Step 2: Convert to fraction form
    516,400.80/774,601.20 = 480,971.40/x
  3. Step 3: Cross multiply
    516,400.80x = 774,601.20 × 480,971.40
  4. Step 4: Simplify right side
    516,400.80x = 372,561,023,605.68
  5. Step 5: Solve for x
    x = 372,561,023,605.68/516,400.80
  6. Step 6: Final answer
    x = 721,457.10

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1.5x scale

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.