Home / 860,780.40-1,289,615.40-736,364.40

Finding the Fourth Proportional to 860,780.40, 1,289,615.40 and 736,364.40

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Solution

The fourth proportional to 860,780.40, 1,289,615.40 and 736,364.40 is: 1,103,216.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,780.40 : 1,289,615.40 = 736,364.40 : x
  2. Step 2: Convert to fraction form
    860,780.40/1,289,615.40 = 736,364.40/x
  3. Step 3: Cross multiply
    860,780.40x = 1,289,615.40 × 736,364.40
  4. Step 4: Simplify right side
    860,780.40x = 949,626,870,251.76
  5. Step 5: Solve for x
    x = 949,626,870,251.76/860,780.40
  6. Step 6: Final answer
    x = 1,103,216.19

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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.