Home / 679,966.20-1,020,200.40-280,641.60

Finding the Fourth Proportional to 679,966.20, 1,020,200.40 and 280,641.60

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Solution

The fourth proportional to 679,966.20, 1,020,200.40 and 280,641.60 is: 421,066.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,966.20 : 1,020,200.40 = 280,641.60 : x
  2. Step 2: Convert to fraction form
    679,966.20/1,020,200.40 = 280,641.60/x
  3. Step 3: Cross multiply
    679,966.20x = 1,020,200.40 × 280,641.60
  4. Step 4: Simplify right side
    679,966.20x = 286,310,672,576.64
  5. Step 5: Solve for x
    x = 286,310,672,576.64/679,966.20
  6. Step 6: Final answer
    x = 421,066.04

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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.