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Finding the Fourth Proportional to 890,969.80, 1,228,348.84 and 707,816.08

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Solution

The fourth proportional to 890,969.80, 1,228,348.84 and 707,816.08 is: 975,841.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,969.80 : 1,228,348.84 = 707,816.08 : x
  2. Step 2: Convert to fraction form
    890,969.80/1,228,348.84 = 707,816.08/x
  3. Step 3: Cross multiply
    890,969.80x = 1,228,348.84 × 707,816.08
  4. Step 4: Simplify right side
    890,969.80x = 869,445,060,801.35
  5. Step 5: Solve for x
    x = 869,445,060,801.35/890,969.80
  6. Step 6: Final answer
    x = 975,841.22

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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.