Home / 918,019.60-1,377,029.40-638,083.60

Finding the Fourth Proportional to 918,019.60, 1,377,029.40 and 638,083.60

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Solution

The fourth proportional to 918,019.60, 1,377,029.40 and 638,083.60 is: 957,125.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,019.60 : 1,377,029.40 = 638,083.60 : x
  2. Step 2: Convert to fraction form
    918,019.60/1,377,029.40 = 638,083.60/x
  3. Step 3: Cross multiply
    918,019.60x = 1,377,029.40 × 638,083.60
  4. Step 4: Simplify right side
    918,019.60x = 878,659,876,857.84
  5. Step 5: Solve for x
    x = 878,659,876,857.84/918,019.60
  6. Step 6: Final answer
    x = 957,125.40

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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.