Home / 1,189,281.46-1,641,209.54-645,417.34

Finding the Fourth Proportional to 1,189,281.46, 1,641,209.54 and 645,417.34

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Solution

The fourth proportional to 1,189,281.46, 1,641,209.54 and 645,417.34 is: 890,676.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,281.46 : 1,641,209.54 = 645,417.34 : x
  2. Step 2: Convert to fraction form
    1,189,281.46/1,641,209.54 = 645,417.34/x
  3. Step 3: Cross multiply
    1,189,281.46x = 1,641,209.54 × 645,417.34
  4. Step 4: Simplify right side
    1,189,281.46x = 1,059,265,095,689.42
  5. Step 5: Solve for x
    x = 1,059,265,095,689.42/1,189,281.46
  6. Step 6: Final answer
    x = 890,676.54

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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.