Home / 1,218,037.72-1,827,012.78-319,472.28

Finding the Fourth Proportional to 1,218,037.72, 1,827,012.78 and 319,472.28

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Solution

The fourth proportional to 1,218,037.72, 1,827,012.78 and 319,472.28 is: 479,196.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,037.72 : 1,827,012.78 = 319,472.28 : x
  2. Step 2: Convert to fraction form
    1,218,037.72/1,827,012.78 = 319,472.28/x
  3. Step 3: Cross multiply
    1,218,037.72x = 1,827,012.78 × 319,472.28
  4. Step 4: Simplify right side
    1,218,037.72x = 583,679,938,415.74
  5. Step 5: Solve for x
    x = 583,679,938,415.74/1,218,037.72
  6. Step 6: Final answer
    x = 479,196.93

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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.