Home / 12,418,689.60-18,628,034.40-5,238,331.20

Finding the Fourth Proportional to 12,418,689.60, 18,628,034.40 and 5,238,331.20

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Solution

The fourth proportional to 12,418,689.60, 18,628,034.40 and 5,238,331.20 is: 7,857,496.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,418,689.60 : 18,628,034.40 = 5,238,331.20 : x
  2. Step 2: Convert to fraction form
    12,418,689.60/18,628,034.40 = 5,238,331.20/x
  3. Step 3: Cross multiply
    12,418,689.60x = 18,628,034.40 × 5,238,331.20
  4. Step 4: Simplify right side
    12,418,689.60x = 97,579,813,792,193.28
  5. Step 5: Solve for x
    x = 97,579,813,792,193.28/12,418,689.60
  6. Step 6: Final answer
    x = 7,857,496.80

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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.