Home / 689,855.13-1,033,612.65-489,176.01

Finding the Fourth Proportional to 689,855.13, 1,033,612.65 and 489,176.01

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Solution

The fourth proportional to 689,855.13, 1,033,612.65 and 489,176.01 is: 732,934.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,855.13 : 1,033,612.65 = 489,176.01 : x
  2. Step 2: Convert to fraction form
    689,855.13/1,033,612.65 = 489,176.01/x
  3. Step 3: Cross multiply
    689,855.13x = 1,033,612.65 × 489,176.01
  4. Step 4: Simplify right side
    689,855.13x = 505,618,512,012.53
  5. Step 5: Solve for x
    x = 505,618,512,012.53/689,855.13
  6. Step 6: Final answer
    x = 732,934.34

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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.