Home / 858,223.20-1,287,334.80-480,309.60

Finding the Fourth Proportional to 858,223.20, 1,287,334.80 and 480,309.60

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Solution

The fourth proportional to 858,223.20, 1,287,334.80 and 480,309.60 is: 720,464.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,223.20 : 1,287,334.80 = 480,309.60 : x
  2. Step 2: Convert to fraction form
    858,223.20/1,287,334.80 = 480,309.60/x
  3. Step 3: Cross multiply
    858,223.20x = 1,287,334.80 × 480,309.60
  4. Step 4: Simplify right side
    858,223.20x = 618,319,262,854.08
  5. Step 5: Solve for x
    x = 618,319,262,854.08/858,223.20
  6. Step 6: Final answer
    x = 720,464.40

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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.