Home / 1,189,666.38-1,641,768.66-645,800.70

Finding the Fourth Proportional to 1,189,666.38, 1,641,768.66 and 645,800.70

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Solution

The fourth proportional to 1,189,666.38, 1,641,768.66 and 645,800.70 is: 891,220.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,666.38 : 1,641,768.66 = 645,800.70 : x
  2. Step 2: Convert to fraction form
    1,189,666.38/1,641,768.66 = 645,800.70/x
  3. Step 3: Cross multiply
    1,189,666.38x = 1,641,768.66 × 645,800.70
  4. Step 4: Simplify right side
    1,189,666.38x = 1,060,255,349,866.06
  5. Step 5: Solve for x
    x = 1,060,255,349,866.06/1,189,666.38
  6. Step 6: Final answer
    x = 891,220.74

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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.