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Finding the Fourth Proportional to 657,990.06, 988,383.48 and 619,595.94

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Solution

The fourth proportional to 657,990.06, 988,383.48 and 619,595.94 is: 930,710.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,990.06 : 988,383.48 = 619,595.94 : x
  2. Step 2: Convert to fraction form
    657,990.06/988,383.48 = 619,595.94/x
  3. Step 3: Cross multiply
    657,990.06x = 988,383.48 × 619,595.94
  4. Step 4: Simplify right side
    657,990.06x = 612,398,391,371.07
  5. Step 5: Solve for x
    x = 612,398,391,371.07/657,990.06
  6. Step 6: Final answer
    x = 930,710.70

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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.