Home / 1,099,565.40-1,649,348.10-389,665.20

Finding the Fourth Proportional to 1,099,565.40, 1,649,348.10 and 389,665.20

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Solution

The fourth proportional to 1,099,565.40, 1,649,348.10 and 389,665.20 is: 584,497.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099,565.40 : 1,649,348.10 = 389,665.20 : x
  2. Step 2: Convert to fraction form
    1,099,565.40/1,649,348.10 = 389,665.20/x
  3. Step 3: Cross multiply
    1,099,565.40x = 1,649,348.10 × 389,665.20
  4. Step 4: Simplify right side
    1,099,565.40x = 642,693,557,256.12
  5. Step 5: Solve for x
    x = 642,693,557,256.12/1,099,565.40
  6. Step 6: Final answer
    x = 584,497.80

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Double scale
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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.