Home / 858,287.70-1,287,431.55-480,374.10

Finding the Fourth Proportional to 858,287.70, 1,287,431.55 and 480,374.10

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Solution

The fourth proportional to 858,287.70, 1,287,431.55 and 480,374.10 is: 720,561.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,287.70 : 1,287,431.55 = 480,374.10 : x
  2. Step 2: Convert to fraction form
    858,287.70/1,287,431.55 = 480,374.10/x
  3. Step 3: Cross multiply
    858,287.70x = 1,287,431.55 × 480,374.10
  4. Step 4: Simplify right side
    858,287.70x = 618,448,772,142.86
  5. Step 5: Solve for x
    x = 618,448,772,142.86/858,287.70
  6. Step 6: Final answer
    x = 720,561.15

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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.