Home / 1,189,434.06-1,641,423.94-645,570.63

Finding the Fourth Proportional to 1,189,434.06, 1,641,423.94 and 645,570.63

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Solution

The fourth proportional to 1,189,434.06, 1,641,423.94 and 645,570.63 is: 890,890.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,434.06 : 1,641,423.94 = 645,570.63 : x
  2. Step 2: Convert to fraction form
    1,189,434.06/1,641,423.94 = 645,570.63/x
  3. Step 3: Cross multiply
    1,189,434.06x = 1,641,423.94 × 645,570.63
  4. Step 4: Simplify right side
    1,189,434.06x = 1,059,655,087,042.88
  5. Step 5: Solve for x
    x = 1,059,655,087,042.88/1,189,434.06
  6. Step 6: Final answer
    x = 890,890.15

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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.