Home / 860,303.80-1,287,831.30-765,825.40

Finding the Fourth Proportional to 860,303.80, 1,287,831.30 and 765,825.40

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Solution

The fourth proportional to 860,303.80, 1,287,831.30 and 765,825.40 is: 1,146,401.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,303.80 : 1,287,831.30 = 765,825.40 : x
  2. Step 2: Convert to fraction form
    860,303.80/1,287,831.30 = 765,825.40/x
  3. Step 3: Cross multiply
    860,303.80x = 1,287,831.30 × 765,825.40
  4. Step 4: Simplify right side
    860,303.80x = 986,253,920,455.02
  5. Step 5: Solve for x
    x = 986,253,920,455.02/860,303.80
  6. Step 6: Final answer
    x = 1,146,401.91

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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.