Home / 988,815.19-1,490,634.12-922,901.20

Finding the Fourth Proportional to 988,815.19, 1,490,634.12 and 922,901.20

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Solution

The fourth proportional to 988,815.19, 1,490,634.12 and 922,901.20 is: 1,391,269.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,815.19 : 1,490,634.12 = 922,901.20 : x
  2. Step 2: Convert to fraction form
    988,815.19/1,490,634.12 = 922,901.20/x
  3. Step 3: Cross multiply
    988,815.19x = 1,490,634.12 × 922,901.20
  4. Step 4: Simplify right side
    988,815.19x = 1,375,708,014,382.36
  5. Step 5: Solve for x
    x = 1,375,708,014,382.36/988,815.19
  6. Step 6: Final answer
    x = 1,391,269.10

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.