Home / 1,189,266.84-1,641,189.36-645,402.72

Finding the Fourth Proportional to 1,189,266.84, 1,641,189.36 and 645,402.72

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Solution

The fourth proportional to 1,189,266.84, 1,641,189.36 and 645,402.72 is: 890,656.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,266.84 : 1,641,189.36 = 645,402.72 : x
  2. Step 2: Convert to fraction form
    1,189,266.84/1,641,189.36 = 645,402.72/x
  3. Step 3: Cross multiply
    1,189,266.84x = 1,641,189.36 × 645,402.72
  4. Step 4: Simplify right side
    1,189,266.84x = 1,059,228,076,979.06
  5. Step 5: Solve for x
    x = 1,059,228,076,979.06/1,189,266.84
  6. Step 6: Final answer
    x = 890,656.36

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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.