Home / 1,247,890.35-1,872,042.45-438,064.76

Finding the Fourth Proportional to 1,247,890.35, 1,872,042.45 and 438,064.76

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Solution

The fourth proportional to 1,247,890.35, 1,872,042.45 and 438,064.76 is: 657,169.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,890.35 : 1,872,042.45 = 438,064.76 : x
  2. Step 2: Convert to fraction form
    1,247,890.35/1,872,042.45 = 438,064.76/x
  3. Step 3: Cross multiply
    1,247,890.35x = 1,872,042.45 × 438,064.76
  4. Step 4: Simplify right side
    1,247,890.35x = 820,075,826,569.06
  5. Step 5: Solve for x
    x = 820,075,826,569.06/1,247,890.35
  6. Step 6: Final answer
    x = 657,169.78

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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.