Home / 689,279.76-951,254.28-402,831.36

Finding the Fourth Proportional to 689,279.76, 951,254.28 and 402,831.36

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Solution

The fourth proportional to 689,279.76, 951,254.28 and 402,831.36 is: 555,935.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,279.76 : 951,254.28 = 402,831.36 : x
  2. Step 2: Convert to fraction form
    689,279.76/951,254.28 = 402,831.36/x
  3. Step 3: Cross multiply
    689,279.76x = 951,254.28 × 402,831.36
  4. Step 4: Simplify right side
    689,279.76x = 383,195,055,318.22
  5. Step 5: Solve for x
    x = 383,195,055,318.22/689,279.76
  6. Step 6: Final answer
    x = 555,935.45

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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.