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Finding the Fourth Proportional to 879,660.60, 1,319,490.90 and 779,933.40

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Solution

The fourth proportional to 879,660.60, 1,319,490.90 and 779,933.40 is: 1,169,900.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,660.60 : 1,319,490.90 = 779,933.40 : x
  2. Step 2: Convert to fraction form
    879,660.60/1,319,490.90 = 779,933.40/x
  3. Step 3: Cross multiply
    879,660.60x = 1,319,490.90 × 779,933.40
  4. Step 4: Simplify right side
    879,660.60x = 1,029,115,023,906.06
  5. Step 5: Solve for x
    x = 1,029,115,023,906.06/879,660.60
  6. Step 6: Final answer
    x = 1,169,900.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.