Home / 743,064.10-1,114,244.79-287,868.58

Finding the Fourth Proportional to 743,064.10, 1,114,244.79 and 287,868.58

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Solution

The fourth proportional to 743,064.10, 1,114,244.79 and 287,868.58 is: 431,666.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,064.10 : 1,114,244.79 = 287,868.58 : x
  2. Step 2: Convert to fraction form
    743,064.10/1,114,244.79 = 287,868.58/x
  3. Step 3: Cross multiply
    743,064.10x = 1,114,244.79 × 287,868.58
  4. Step 4: Simplify right side
    743,064.10x = 320,756,065,469.70
  5. Step 5: Solve for x
    x = 320,756,065,469.70/743,064.10
  6. Step 6: Final answer
    x = 431,666.75

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Double scale
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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.