Home / 477,120.78-658,152.14-286,023.15

Finding the Fourth Proportional to 477,120.78, 658,152.14 and 286,023.15

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Solution

The fourth proportional to 477,120.78, 658,152.14 and 286,023.15 is: 394,547.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,120.78 : 658,152.14 = 286,023.15 : x
  2. Step 2: Convert to fraction form
    477,120.78/658,152.14 = 286,023.15/x
  3. Step 3: Cross multiply
    477,120.78x = 658,152.14 × 286,023.15
  4. Step 4: Simplify right side
    477,120.78x = 188,246,746,831.93
  5. Step 5: Solve for x
    x = 188,246,746,831.93/477,120.78
  6. Step 6: Final answer
    x = 394,547.37

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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.