Home / 1,099,400.90-1,649,101.35-389,452.10

Finding the Fourth Proportional to 1,099,400.90, 1,649,101.35 and 389,452.10

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Solution

The fourth proportional to 1,099,400.90, 1,649,101.35 and 389,452.10 is: 584,178.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099,400.90 : 1,649,101.35 = 389,452.10 : x
  2. Step 2: Convert to fraction form
    1,099,400.90/1,649,101.35 = 389,452.10/x
  3. Step 3: Cross multiply
    1,099,400.90x = 1,649,101.35 × 389,452.10
  4. Step 4: Simplify right side
    1,099,400.90x = 642,245,983,870.34
  5. Step 5: Solve for x
    x = 642,245,983,870.34/1,099,400.90
  6. Step 6: Final answer
    x = 584,178.15

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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.