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Finding the Fourth Proportional to 887,624.20, 1,328,811.90 and 835,719.40

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Solution

The fourth proportional to 887,624.20, 1,328,811.90 and 835,719.40 is: 1,251,108.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,624.20 : 1,328,811.90 = 835,719.40 : x
  2. Step 2: Convert to fraction form
    887,624.20/1,328,811.90 = 835,719.40/x
  3. Step 3: Cross multiply
    887,624.20x = 1,328,811.90 × 835,719.40
  4. Step 4: Simplify right side
    887,624.20x = 1,110,513,883,780.86
  5. Step 5: Solve for x
    x = 1,110,513,883,780.86/887,624.20
  6. Step 6: Final answer
    x = 1,251,108.16

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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.