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Finding the Fourth Proportional to 710,587.29, 980,666.36 and 404,676.61

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Solution

The fourth proportional to 710,587.29, 980,666.36 and 404,676.61 is: 558,485.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,587.29 : 980,666.36 = 404,676.61 : x
  2. Step 2: Convert to fraction form
    710,587.29/980,666.36 = 404,676.61/x
  3. Step 3: Cross multiply
    710,587.29x = 980,666.36 × 404,676.61
  4. Step 4: Simplify right side
    710,587.29x = 396,852,738,105.84
  5. Step 5: Solve for x
    x = 396,852,738,105.84/710,587.29
  6. Step 6: Final answer
    x = 558,485.56

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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.