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Finding the Fourth Proportional to 781,818.94, 1,078,353.94 and 717,495.89

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Solution

The fourth proportional to 781,818.94, 1,078,353.94 and 717,495.89 is: 989,633.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,818.94 : 1,078,353.94 = 717,495.89 : x
  2. Step 2: Convert to fraction form
    781,818.94/1,078,353.94 = 717,495.89/x
  3. Step 3: Cross multiply
    781,818.94x = 1,078,353.94 × 717,495.89
  4. Step 4: Simplify right side
    781,818.94x = 773,714,519,915.31
  5. Step 5: Solve for x
    x = 773,714,519,915.31/781,818.94
  6. Step 6: Final answer
    x = 989,633.89

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.