Home / 765,017.06-1,055,690.26-420,831.17

Finding the Fourth Proportional to 765,017.06, 1,055,690.26 and 420,831.17

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Solution

The fourth proportional to 765,017.06, 1,055,690.26 and 420,831.17 is: 580,728.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,017.06 : 1,055,690.26 = 420,831.17 : x
  2. Step 2: Convert to fraction form
    765,017.06/1,055,690.26 = 420,831.17/x
  3. Step 3: Cross multiply
    765,017.06x = 1,055,690.26 × 420,831.17
  4. Step 4: Simplify right side
    765,017.06x = 444,267,364,901.71
  5. Step 5: Solve for x
    x = 444,267,364,901.71/765,017.06
  6. Step 6: Final answer
    x = 580,728.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.