Home / 781,831.40-1,078,812.54-437,649.44

Finding the Fourth Proportional to 781,831.40, 1,078,812.54 and 437,649.44

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Solution

The fourth proportional to 781,831.40, 1,078,812.54 and 437,649.44 is: 603,891.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,831.40 : 1,078,812.54 = 437,649.44 : x
  2. Step 2: Convert to fraction form
    781,831.40/1,078,812.54 = 437,649.44/x
  3. Step 3: Cross multiply
    781,831.40x = 1,078,812.54 × 437,649.44
  4. Step 4: Simplify right side
    781,831.40x = 472,141,698,601.92
  5. Step 5: Solve for x
    x = 472,141,698,601.92/781,831.40
  6. Step 6: Final answer
    x = 603,891.97

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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.