Home / 679,935.60-1,019,903.40-280,443.60

Finding the Fourth Proportional to 679,935.60, 1,019,903.40 and 280,443.60

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Solution

The fourth proportional to 679,935.60, 1,019,903.40 and 280,443.60 is: 420,665.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,935.60 : 1,019,903.40 = 280,443.60 : x
  2. Step 2: Convert to fraction form
    679,935.60/1,019,903.40 = 280,443.60/x
  3. Step 3: Cross multiply
    679,935.60x = 1,019,903.40 × 280,443.60
  4. Step 4: Simplify right side
    679,935.60x = 286,025,381,148.24
  5. Step 5: Solve for x
    x = 286,025,381,148.24/679,935.60
  6. Step 6: Final answer
    x = 420,665.40

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Double scale
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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.