Home / 643,032.30-887,341.32-356,541.78

Finding the Fourth Proportional to 643,032.30, 887,341.32 and 356,541.78

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Solution

The fourth proportional to 643,032.30, 887,341.32 and 356,541.78 is: 492,003.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,032.30 : 887,341.32 = 356,541.78 : x
  2. Step 2: Convert to fraction form
    643,032.30/887,341.32 = 356,541.78/x
  3. Step 3: Cross multiply
    643,032.30x = 887,341.32 × 356,541.78
  4. Step 4: Simplify right side
    643,032.30x = 316,374,253,700.35
  5. Step 5: Solve for x
    x = 316,374,253,700.35/643,032.30
  6. Step 6: Final answer
    x = 492,003.67

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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.