Home / 1,389,141.36-2,083,755.78-478,314.18

Finding the Fourth Proportional to 1,389,141.36, 2,083,755.78 and 478,314.18

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Solution

The fourth proportional to 1,389,141.36, 2,083,755.78 and 478,314.18 is: 717,486.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,141.36 : 2,083,755.78 = 478,314.18 : x
  2. Step 2: Convert to fraction form
    1,389,141.36/2,083,755.78 = 478,314.18/x
  3. Step 3: Cross multiply
    1,389,141.36x = 2,083,755.78 × 478,314.18
  4. Step 4: Simplify right side
    1,389,141.36x = 996,689,937,230.96
  5. Step 5: Solve for x
    x = 996,689,937,230.96/1,389,141.36
  6. Step 6: Final answer
    x = 717,486.33

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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.