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Finding the Fourth Proportional to 615,856.32, 923,084.16 and 260,648.64

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Solution

The fourth proportional to 615,856.32, 923,084.16 and 260,648.64 is: 390,676.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,856.32 : 923,084.16 = 260,648.64 : x
  2. Step 2: Convert to fraction form
    615,856.32/923,084.16 = 260,648.64/x
  3. Step 3: Cross multiply
    615,856.32x = 923,084.16 × 260,648.64
  4. Step 4: Simplify right side
    615,856.32x = 240,600,630,909.54
  5. Step 5: Solve for x
    x = 240,600,630,909.54/615,856.32
  6. Step 6: Final answer
    x = 390,676.56

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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.