Home / 874,700.15-1,307,257.79-638,540.15

Finding the Fourth Proportional to 874,700.15, 1,307,257.79 and 638,540.15

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Solution

The fourth proportional to 874,700.15, 1,307,257.79 and 638,540.15 is: 954,311.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,700.15 : 1,307,257.79 = 638,540.15 : x
  2. Step 2: Convert to fraction form
    874,700.15/1,307,257.79 = 638,540.15/x
  3. Step 3: Cross multiply
    874,700.15x = 1,307,257.79 × 638,540.15
  4. Step 4: Simplify right side
    874,700.15x = 834,736,575,586.28
  5. Step 5: Solve for x
    x = 834,736,575,586.28/874,700.15
  6. Step 6: Final answer
    x = 954,311.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.