Home / 473,905.08-707,831.19-428,856.60

Finding the Fourth Proportional to 473,905.08, 707,831.19 and 428,856.60

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Solution

The fourth proportional to 473,905.08, 707,831.19 and 428,856.60 is: 640,546.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,905.08 : 707,831.19 = 428,856.60 : x
  2. Step 2: Convert to fraction form
    473,905.08/707,831.19 = 428,856.60/x
  3. Step 3: Cross multiply
    473,905.08x = 707,831.19 × 428,856.60
  4. Step 4: Simplify right side
    473,905.08x = 303,558,077,517.35
  5. Step 5: Solve for x
    x = 303,558,077,517.35/473,905.08
  6. Step 6: Final answer
    x = 640,546.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.