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Finding the Fourth Proportional to 615,908.40, 923,862.60 and 547,479.60

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Solution

The fourth proportional to 615,908.40, 923,862.60 and 547,479.60 is: 821,219.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,908.40 : 923,862.60 = 547,479.60 : x
  2. Step 2: Convert to fraction form
    615,908.40/923,862.60 = 547,479.60/x
  3. Step 3: Cross multiply
    615,908.40x = 923,862.60 × 547,479.60
  4. Step 4: Simplify right side
    615,908.40x = 505,795,926,702.96
  5. Step 5: Solve for x
    x = 505,795,926,702.96/615,908.40
  6. Step 6: Final answer
    x = 821,219.40

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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.