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Finding the Fourth Proportional to 615,193.20, 921,040.20 and 474,058.80

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Solution

The fourth proportional to 615,193.20, 921,040.20 and 474,058.80 is: 709,739.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,193.20 : 921,040.20 = 474,058.80 : x
  2. Step 2: Convert to fraction form
    615,193.20/921,040.20 = 474,058.80/x
  3. Step 3: Cross multiply
    615,193.20x = 921,040.20 × 474,058.80
  4. Step 4: Simplify right side
    615,193.20x = 436,627,211,963.76
  5. Step 5: Solve for x
    x = 436,627,211,963.76/615,193.20
  6. Step 6: Final answer
    x = 709,739.98

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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.