Home / 638,443.10-881,091.15-351,962.66

Finding the Fourth Proportional to 638,443.10, 881,091.15 and 351,962.66

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Solution

The fourth proportional to 638,443.10, 881,091.15 and 351,962.66 is: 485,730.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,443.10 : 881,091.15 = 351,962.66 : x
  2. Step 2: Convert to fraction form
    638,443.10/881,091.15 = 351,962.66/x
  3. Step 3: Cross multiply
    638,443.10x = 881,091.15 × 351,962.66
  4. Step 4: Simplify right side
    638,443.10x = 310,111,184,856.46
  5. Step 5: Solve for x
    x = 310,111,184,856.46/638,443.10
  6. Step 6: Final answer
    x = 485,730.34

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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.