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Finding the Fourth Proportional to 774,767.16, 1,068,747.21 and 719,966.61

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Solution

The fourth proportional to 774,767.16, 1,068,747.21 and 719,966.61 is: 993,152.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,767.16 : 1,068,747.21 = 719,966.61 : x
  2. Step 2: Convert to fraction form
    774,767.16/1,068,747.21 = 719,966.61/x
  3. Step 3: Cross multiply
    774,767.16x = 1,068,747.21 × 719,966.61
  4. Step 4: Simplify right side
    774,767.16x = 769,462,305,730.66
  5. Step 5: Solve for x
    x = 769,462,305,730.66/774,767.16
  6. Step 6: Final answer
    x = 993,152.97

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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.