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Finding the Fourth Proportional to 708,967.72, 978,701.70 and 611,785

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Solution

The fourth proportional to 708,967.72, 978,701.70 and 611,785 is: 844,544.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,967.72 : 978,701.70 = 611,785 : x
  2. Step 2: Convert to fraction form
    708,967.72/978,701.70 = 611,785/x
  3. Step 3: Cross multiply
    708,967.72x = 978,701.70 × 611,785
  4. Step 4: Simplify right side
    708,967.72x = 598,755,019,534.50
  5. Step 5: Solve for x
    x = 598,755,019,534.50/708,967.72
  6. Step 6: Final answer
    x = 844,544.83

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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.