Home / 679,957.60-1,019,936.40-280,465.60

Finding the Fourth Proportional to 679,957.60, 1,019,936.40 and 280,465.60

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Solution

The fourth proportional to 679,957.60, 1,019,936.40 and 280,465.60 is: 420,698.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,957.60 : 1,019,936.40 = 280,465.60 : x
  2. Step 2: Convert to fraction form
    679,957.60/1,019,936.40 = 280,465.60/x
  3. Step 3: Cross multiply
    679,957.60x = 1,019,936.40 × 280,465.60
  4. Step 4: Simplify right side
    679,957.60x = 286,057,074,387.84
  5. Step 5: Solve for x
    x = 286,057,074,387.84/679,957.60
  6. Step 6: Final answer
    x = 420,698.40

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Similar ratio
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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.