Home / 1,189,638.30-1,641,702.96-645,774.48

Finding the Fourth Proportional to 1,189,638.30, 1,641,702.96 and 645,774.48

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Solution

The fourth proportional to 1,189,638.30, 1,641,702.96 and 645,774.48 is: 891,169.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,638.30 : 1,641,702.96 = 645,774.48 : x
  2. Step 2: Convert to fraction form
    1,189,638.30/1,641,702.96 = 645,774.48/x
  3. Step 3: Cross multiply
    1,189,638.30x = 1,641,702.96 × 645,774.48
  4. Step 4: Simplify right side
    1,189,638.30x = 1,060,169,875,308.46
  5. Step 5: Solve for x
    x = 1,060,169,875,308.46/1,189,638.30
  6. Step 6: Final answer
    x = 891,169.93

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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.