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Finding the Fourth Proportional to 521,817.02, 720,452.85 and 400,741.01

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Solution

The fourth proportional to 521,817.02, 720,452.85 and 400,741.01 is: 553,287.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,817.02 : 720,452.85 = 400,741.01 : x
  2. Step 2: Convert to fraction form
    521,817.02/720,452.85 = 400,741.01/x
  3. Step 3: Cross multiply
    521,817.02x = 720,452.85 × 400,741.01
  4. Step 4: Simplify right side
    521,817.02x = 288,715,002,766.38
  5. Step 5: Solve for x
    x = 288,715,002,766.38/521,817.02
  6. Step 6: Final answer
    x = 553,287.82

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1.5x scale

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.