Home / 860,399.40-1,289,432.70-575,279.40

Finding the Fourth Proportional to 860,399.40, 1,289,432.70 and 575,279.40

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Solution

The fourth proportional to 860,399.40, 1,289,432.70 and 575,279.40 is: 862,139.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,399.40 : 1,289,432.70 = 575,279.40 : x
  2. Step 2: Convert to fraction form
    860,399.40/1,289,432.70 = 575,279.40/x
  3. Step 3: Cross multiply
    860,399.40x = 1,289,432.70 × 575,279.40
  4. Step 4: Simplify right side
    860,399.40x = 741,784,069,996.38
  5. Step 5: Solve for x
    x = 741,784,069,996.38/860,399.40
  6. Step 6: Final answer
    x = 862,139.22

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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.