Home / 858,287.20-1,287,430.80-480,373.60

Finding the Fourth Proportional to 858,287.20, 1,287,430.80 and 480,373.60

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Solution

The fourth proportional to 858,287.20, 1,287,430.80 and 480,373.60 is: 720,560.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,287.20 : 1,287,430.80 = 480,373.60 : x
  2. Step 2: Convert to fraction form
    858,287.20/1,287,430.80 = 480,373.60/x
  3. Step 3: Cross multiply
    858,287.20x = 1,287,430.80 × 480,373.60
  4. Step 4: Simplify right side
    858,287.20x = 618,447,768,146.88
  5. Step 5: Solve for x
    x = 618,447,768,146.88/858,287.20
  6. Step 6: Final answer
    x = 720,560.40

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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.