Home / 1,087,220.80-1,630,831.20-919,259.20

Finding the Fourth Proportional to 1,087,220.80, 1,630,831.20 and 919,259.20

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Solution

The fourth proportional to 1,087,220.80, 1,630,831.20 and 919,259.20 is: 1,378,888.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,220.80 : 1,630,831.20 = 919,259.20 : x
  2. Step 2: Convert to fraction form
    1,087,220.80/1,630,831.20 = 919,259.20/x
  3. Step 3: Cross multiply
    1,087,220.80x = 1,630,831.20 × 919,259.20
  4. Step 4: Simplify right side
    1,087,220.80x = 1,499,156,584,247.04
  5. Step 5: Solve for x
    x = 1,499,156,584,247.04/1,087,220.80
  6. Step 6: Final answer
    x = 1,378,888.80

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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.