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Finding the Fourth Proportional to 615,272.40, 923,054.40 and 315,799.20

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Solution

The fourth proportional to 615,272.40, 923,054.40 and 315,799.20 is: 473,773.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,272.40 : 923,054.40 = 315,799.20 : x
  2. Step 2: Convert to fraction form
    615,272.40/923,054.40 = 315,799.20/x
  3. Step 3: Cross multiply
    615,272.40x = 923,054.40 × 315,799.20
  4. Step 4: Simplify right side
    615,272.40x = 291,499,841,076.48
  5. Step 5: Solve for x
    x = 291,499,841,076.48/615,272.40
  6. Step 6: Final answer
    x = 473,773.63

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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.