Home / 1,431,026.40-1,974,720.78-786,432.72

Finding the Fourth Proportional to 1,431,026.40, 1,974,720.78 and 786,432.72

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Solution

The fourth proportional to 1,431,026.40, 1,974,720.78 and 786,432.72 is: 1,085,224.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,026.40 : 1,974,720.78 = 786,432.72 : x
  2. Step 2: Convert to fraction form
    1,431,026.40/1,974,720.78 = 786,432.72/x
  3. Step 3: Cross multiply
    1,431,026.40x = 1,974,720.78 × 786,432.72
  4. Step 4: Simplify right side
    1,431,026.40x = 1,552,985,034,255.92
  5. Step 5: Solve for x
    x = 1,552,985,034,255.92/1,431,026.40
  6. Step 6: Final answer
    x = 1,085,224.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.