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Finding the Fourth Proportional to 472,904.10, 709,356.15 and 445,256.10

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Solution

The fourth proportional to 472,904.10, 709,356.15 and 445,256.10 is: 667,884.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,904.10 : 709,356.15 = 445,256.10 : x
  2. Step 2: Convert to fraction form
    472,904.10/709,356.15 = 445,256.10/x
  3. Step 3: Cross multiply
    472,904.10x = 709,356.15 × 445,256.10
  4. Step 4: Simplify right side
    472,904.10x = 315,845,152,860.02
  5. Step 5: Solve for x
    x = 315,845,152,860.02/472,904.10
  6. Step 6: Final answer
    x = 667,884.15

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Similar ratio
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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.