Home / 1,189,420.79-1,641,402.23-645,556.52

Finding the Fourth Proportional to 1,189,420.79, 1,641,402.23 and 645,556.52

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Solution

The fourth proportional to 1,189,420.79, 1,641,402.23 and 645,556.52 is: 890,868.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,420.79 : 1,641,402.23 = 645,556.52 : x
  2. Step 2: Convert to fraction form
    1,189,420.79/1,641,402.23 = 645,556.52/x
  3. Step 3: Cross multiply
    1,189,420.79x = 1,641,402.23 × 645,556.52
  4. Step 4: Simplify right side
    1,189,420.79x = 1,059,617,911,081.18
  5. Step 5: Solve for x
    x = 1,059,617,911,081.18/1,189,420.79
  6. Step 6: Final answer
    x = 890,868.83

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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.