Home / 679,982.10-1,019,973.15-280,490.10

Finding the Fourth Proportional to 679,982.10, 1,019,973.15 and 280,490.10

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Solution

The fourth proportional to 679,982.10, 1,019,973.15 and 280,490.10 is: 420,735.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,982.10 : 1,019,973.15 = 280,490.10 : x
  2. Step 2: Convert to fraction form
    679,982.10/1,019,973.15 = 280,490.10/x
  3. Step 3: Cross multiply
    679,982.10x = 1,019,973.15 × 280,490.10
  4. Step 4: Simplify right side
    679,982.10x = 286,092,370,840.82
  5. Step 5: Solve for x
    x = 286,092,370,840.82/679,982.10
  6. Step 6: Final answer
    x = 420,735.15

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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.