Home / 1,121,485.14-1,547,619.75-1,031,205.78

Finding the Fourth Proportional to 1,121,485.14, 1,547,619.75 and 1,031,205.78

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Solution

The fourth proportional to 1,121,485.14, 1,547,619.75 and 1,031,205.78 is: 1,423,036.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,485.14 : 1,547,619.75 = 1,031,205.78 : x
  2. Step 2: Convert to fraction form
    1,121,485.14/1,547,619.75 = 1,031,205.78/x
  3. Step 3: Cross multiply
    1,121,485.14x = 1,547,619.75 × 1,031,205.78
  4. Step 4: Simplify right side
    1,121,485.14x = 1,595,914,431,442.16
  5. Step 5: Solve for x
    x = 1,595,914,431,442.16/1,121,485.14
  6. Step 6: Final answer
    x = 1,423,036.63

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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.