Home / 478,961.52-661,011.28-275,039.20

Finding the Fourth Proportional to 478,961.52, 661,011.28 and 275,039.20

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Solution

The fourth proportional to 478,961.52, 661,011.28 and 275,039.20 is: 379,579.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,961.52 : 661,011.28 = 275,039.20 : x
  2. Step 2: Convert to fraction form
    478,961.52/661,011.28 = 275,039.20/x
  3. Step 3: Cross multiply
    478,961.52x = 661,011.28 × 275,039.20
  4. Step 4: Simplify right side
    478,961.52x = 181,804,013,642.18
  5. Step 5: Solve for x
    x = 181,804,013,642.18/478,961.52
  6. Step 6: Final answer
    x = 379,579.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.