Home / 1,189,308.84-1,641,247.20-645,444.66

Finding the Fourth Proportional to 1,189,308.84, 1,641,247.20 and 645,444.66

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Solution

The fourth proportional to 1,189,308.84, 1,641,247.20 and 645,444.66 is: 890,714.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,308.84 : 1,641,247.20 = 645,444.66 : x
  2. Step 2: Convert to fraction form
    1,189,308.84/1,641,247.20 = 645,444.66/x
  3. Step 3: Cross multiply
    1,189,308.84x = 1,641,247.20 × 645,444.66
  4. Step 4: Simplify right side
    1,189,308.84x = 1,059,334,240,979.95
  5. Step 5: Solve for x
    x = 1,059,334,240,979.95/1,189,308.84
  6. Step 6: Final answer
    x = 890,714.17

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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.