Home / 695,401.20-1,043,101.80-428,295.60

Finding the Fourth Proportional to 695,401.20, 1,043,101.80 and 428,295.60

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Solution

The fourth proportional to 695,401.20, 1,043,101.80 and 428,295.60 is: 642,443.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,401.20 : 1,043,101.80 = 428,295.60 : x
  2. Step 2: Convert to fraction form
    695,401.20/1,043,101.80 = 428,295.60/x
  3. Step 3: Cross multiply
    695,401.20x = 1,043,101.80 × 428,295.60
  4. Step 4: Simplify right side
    695,401.20x = 446,755,911,292.08
  5. Step 5: Solve for x
    x = 446,755,911,292.08/695,401.20
  6. Step 6: Final answer
    x = 642,443.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.