Home / 1,288,475.10-1,932,220.58-389,618.10

Finding the Fourth Proportional to 1,288,475.10, 1,932,220.58 and 389,618.10

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Solution

The fourth proportional to 1,288,475.10, 1,932,220.58 and 389,618.10 is: 584,278.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,475.10 : 1,932,220.58 = 389,618.10 : x
  2. Step 2: Convert to fraction form
    1,288,475.10/1,932,220.58 = 389,618.10/x
  3. Step 3: Cross multiply
    1,288,475.10x = 1,932,220.58 × 389,618.10
  4. Step 4: Simplify right side
    1,288,475.10x = 752,828,109,212.41
  5. Step 5: Solve for x
    x = 752,828,109,212.41/1,288,475.10
  6. Step 6: Final answer
    x = 584,278.35

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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.