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Finding the Fourth Proportional to 577,550.40, 865,288.80 and 511,195.20

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Solution

The fourth proportional to 577,550.40, 865,288.80 and 511,195.20 is: 765,875.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,550.40 : 865,288.80 = 511,195.20 : x
  2. Step 2: Convert to fraction form
    577,550.40/865,288.80 = 511,195.20/x
  3. Step 3: Cross multiply
    577,550.40x = 865,288.80 × 511,195.20
  4. Step 4: Simplify right side
    577,550.40x = 442,331,481,173.76
  5. Step 5: Solve for x
    x = 442,331,481,173.76/577,550.40
  6. Step 6: Final answer
    x = 765,875.12

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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.