Home / 497,831.75-687,059.66-306,840.23

Finding the Fourth Proportional to 497,831.75, 687,059.66 and 306,840.23

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Solution

The fourth proportional to 497,831.75, 687,059.66 and 306,840.23 is: 423,471.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,831.75 : 687,059.66 = 306,840.23 : x
  2. Step 2: Convert to fraction form
    497,831.75/687,059.66 = 306,840.23/x
  3. Step 3: Cross multiply
    497,831.75x = 687,059.66 × 306,840.23
  4. Step 4: Simplify right side
    497,831.75x = 210,817,544,098.12
  5. Step 5: Solve for x
    x = 210,817,544,098.12/497,831.75
  6. Step 6: Final answer
    x = 423,471.47

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1.5x scale

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.