Home / 615,095.20-921,865.20-548,221.60

Finding the Fourth Proportional to 615,095.20, 921,865.20 and 548,221.60

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Solution

The fourth proportional to 615,095.20, 921,865.20 and 548,221.60 is: 821,639.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,095.20 : 921,865.20 = 548,221.60 : x
  2. Step 2: Convert to fraction form
    615,095.20/921,865.20 = 548,221.60/x
  3. Step 3: Cross multiply
    615,095.20x = 921,865.20 × 548,221.60
  4. Step 4: Simplify right side
    615,095.20x = 505,386,414,928.32
  5. Step 5: Solve for x
    x = 505,386,414,928.32/615,095.20
  6. Step 6: Final answer
    x = 821,639.34

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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.