Home / 1,230,338.60-1,845,507.90-389,148.20

Finding the Fourth Proportional to 1,230,338.60, 1,845,507.90 and 389,148.20

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Solution

The fourth proportional to 1,230,338.60, 1,845,507.90 and 389,148.20 is: 583,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,338.60 : 1,845,507.90 = 389,148.20 : x
  2. Step 2: Convert to fraction form
    1,230,338.60/1,845,507.90 = 389,148.20/x
  3. Step 3: Cross multiply
    1,230,338.60x = 1,845,507.90 × 389,148.20
  4. Step 4: Simplify right side
    1,230,338.60x = 718,176,077,370.78
  5. Step 5: Solve for x
    x = 718,176,077,370.78/1,230,338.60
  6. Step 6: Final answer
    x = 583,722.30

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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.