Home / 642,734.10-963,712.35-287,681.94

Finding the Fourth Proportional to 642,734.10, 963,712.35 and 287,681.94

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Solution

The fourth proportional to 642,734.10, 963,712.35 and 287,681.94 is: 431,348.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,734.10 : 963,712.35 = 287,681.94 : x
  2. Step 2: Convert to fraction form
    642,734.10/963,712.35 = 287,681.94/x
  3. Step 3: Cross multiply
    642,734.10x = 963,712.35 × 287,681.94
  4. Step 4: Simplify right side
    642,734.10x = 277,242,638,449.96
  5. Step 5: Solve for x
    x = 277,242,638,449.96/642,734.10
  6. Step 6: Final answer
    x = 431,348.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.