Home / 862,300.68-1,189,976.07-469,831.79

Finding the Fourth Proportional to 862,300.68, 1,189,976.07 and 469,831.79

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Solution

The fourth proportional to 862,300.68, 1,189,976.07 and 469,831.79 is: 648,368.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,300.68 : 1,189,976.07 = 469,831.79 : x
  2. Step 2: Convert to fraction form
    862,300.68/1,189,976.07 = 469,831.79/x
  3. Step 3: Cross multiply
    862,300.68x = 1,189,976.07 × 469,831.79
  4. Step 4: Simplify right side
    862,300.68x = 559,088,581,075.39
  5. Step 5: Solve for x
    x = 559,088,581,075.39/862,300.68
  6. Step 6: Final answer
    x = 648,368.48

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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.