Home / 1,121,720.51-1,547,966.22-612,422.88

Finding the Fourth Proportional to 1,121,720.51, 1,547,966.22 and 612,422.88

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Solution

The fourth proportional to 1,121,720.51, 1,547,966.22 and 612,422.88 is: 845,139.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,720.51 : 1,547,966.22 = 612,422.88 : x
  2. Step 2: Convert to fraction form
    1,121,720.51/1,547,966.22 = 612,422.88/x
  3. Step 3: Cross multiply
    1,121,720.51x = 1,547,966.22 × 612,422.88
  4. Step 4: Simplify right side
    1,121,720.51x = 948,009,930,595.11
  5. Step 5: Solve for x
    x = 948,009,930,595.11/1,121,720.51
  6. Step 6: Final answer
    x = 845,139.16

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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.