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Finding the Fourth Proportional to 487,075.20, 730,612.80 and 410,092.80

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Solution

The fourth proportional to 487,075.20, 730,612.80 and 410,092.80 is: 615,139.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,075.20 : 730,612.80 = 410,092.80 : x
  2. Step 2: Convert to fraction form
    487,075.20/730,612.80 = 410,092.80/x
  3. Step 3: Cross multiply
    487,075.20x = 730,612.80 × 410,092.80
  4. Step 4: Simplify right side
    487,075.20x = 299,619,048,867.84
  5. Step 5: Solve for x
    x = 299,619,048,867.84/487,075.20
  6. Step 6: Final answer
    x = 615,139.20

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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.