Home / 696,838.70-1,045,914.15-431,118.20

Finding the Fourth Proportional to 696,838.70, 1,045,914.15 and 431,118.20

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Solution

The fourth proportional to 696,838.70, 1,045,914.15 and 431,118.20 is: 647,083.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,838.70 : 1,045,914.15 = 431,118.20 : x
  2. Step 2: Convert to fraction form
    696,838.70/1,045,914.15 = 431,118.20/x
  3. Step 3: Cross multiply
    696,838.70x = 1,045,914.15 × 431,118.20
  4. Step 4: Simplify right side
    696,838.70x = 450,912,625,702.53
  5. Step 5: Solve for x
    x = 450,912,625,702.53/696,838.70
  6. Step 6: Final answer
    x = 647,083.21

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1.5x scale

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.