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Finding the Fourth Proportional to 615,714.45, 923,079.60 and 260,436.30

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Solution

The fourth proportional to 615,714.45, 923,079.60 and 260,436.30 is: 390,446.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,714.45 : 923,079.60 = 260,436.30 : x
  2. Step 2: Convert to fraction form
    615,714.45/923,079.60 = 260,436.30/x
  3. Step 3: Cross multiply
    615,714.45x = 923,079.60 × 260,436.30
  4. Step 4: Simplify right side
    615,714.45x = 240,403,435,629.48
  5. Step 5: Solve for x
    x = 240,403,435,629.48/615,714.45
  6. Step 6: Final answer
    x = 390,446.31

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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.