Home / 768,205.71-1,060,018.52-428,608.35

Finding the Fourth Proportional to 768,205.71, 1,060,018.52 and 428,608.35

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Solution

The fourth proportional to 768,205.71, 1,060,018.52 and 428,608.35 is: 591,420.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,205.71 : 1,060,018.52 = 428,608.35 : x
  2. Step 2: Convert to fraction form
    768,205.71/1,060,018.52 = 428,608.35/x
  3. Step 3: Cross multiply
    768,205.71x = 1,060,018.52 × 428,608.35
  4. Step 4: Simplify right side
    768,205.71x = 454,332,786,683.60
  5. Step 5: Solve for x
    x = 454,332,786,683.60/768,205.71
  6. Step 6: Final answer
    x = 591,420.74

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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.