Home / 2,478,914.71-3,420,970.13-1,391,253.71

Finding the Fourth Proportional to 2,478,914.71, 3,420,970.13 and 1,391,253.71

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Solution

The fourth proportional to 2,478,914.71, 3,420,970.13 and 1,391,253.71 is: 1,919,968.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478,914.71 : 3,420,970.13 = 1,391,253.71 : x
  2. Step 2: Convert to fraction form
    2,478,914.71/3,420,970.13 = 1,391,253.71/x
  3. Step 3: Cross multiply
    2,478,914.71x = 3,420,970.13 × 1,391,253.71
  4. Step 4: Simplify right side
    2,478,914.71x = 4,759,437,371,534.97
  5. Step 5: Solve for x
    x = 4,759,437,371,534.97/2,478,914.71
  6. Step 6: Final answer
    x = 1,919,968.18

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1.5x scale

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.