Home / 1,215,311.80-1,822,967.70-860,726.20

Finding the Fourth Proportional to 1,215,311.80, 1,822,967.70 and 860,726.20

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Solution

The fourth proportional to 1,215,311.80, 1,822,967.70 and 860,726.20 is: 1,291,089.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,311.80 : 1,822,967.70 = 860,726.20 : x
  2. Step 2: Convert to fraction form
    1,215,311.80/1,822,967.70 = 860,726.20/x
  3. Step 3: Cross multiply
    1,215,311.80x = 1,822,967.70 × 860,726.20
  4. Step 4: Simplify right side
    1,215,311.80x = 1,569,076,061,143.74
  5. Step 5: Solve for x
    x = 1,569,076,061,143.74/1,215,311.80
  6. Step 6: Final answer
    x = 1,291,089.30

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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.