Home / 1,121,719.50-1,547,964.84-612,421.88

Finding the Fourth Proportional to 1,121,719.50, 1,547,964.84 and 612,421.88

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Solution

The fourth proportional to 1,121,719.50, 1,547,964.84 and 612,421.88 is: 845,137.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,719.50 : 1,547,964.84 = 612,421.88 : x
  2. Step 2: Convert to fraction form
    1,121,719.50/1,547,964.84 = 612,421.88/x
  3. Step 3: Cross multiply
    1,121,719.50x = 1,547,964.84 × 612,421.88
  4. Step 4: Simplify right side
    1,121,719.50x = 948,007,537,486.70
  5. Step 5: Solve for x
    x = 948,007,537,486.70/1,121,719.50
  6. Step 6: Final answer
    x = 845,137.79

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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.