Home / 988,020.30-1,363,050.38-661,438.49

Finding the Fourth Proportional to 988,020.30, 1,363,050.38 and 661,438.49

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Solution

The fourth proportional to 988,020.30, 1,363,050.38 and 661,438.49 is: 912,505.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,020.30 : 1,363,050.38 = 661,438.49 : x
  2. Step 2: Convert to fraction form
    988,020.30/1,363,050.38 = 661,438.49/x
  3. Step 3: Cross multiply
    988,020.30x = 1,363,050.38 × 661,438.49
  4. Step 4: Simplify right side
    988,020.30x = 901,573,985,141.13
  5. Step 5: Solve for x
    x = 901,573,985,141.13/988,020.30
  6. Step 6: Final answer
    x = 912,505.53

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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.