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Finding the Fourth Proportional to 424,738.40, 637,106.82 and 291,213.86

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Solution

The fourth proportional to 424,738.40, 637,106.82 and 291,213.86 is: 436,820.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,738.40 : 637,106.82 = 291,213.86 : x
  2. Step 2: Convert to fraction form
    424,738.40/637,106.82 = 291,213.86/x
  3. Step 3: Cross multiply
    424,738.40x = 637,106.82 × 291,213.86
  4. Step 4: Simplify right side
    424,738.40x = 185,534,336,284.53
  5. Step 5: Solve for x
    x = 185,534,336,284.53/424,738.40
  6. Step 6: Final answer
    x = 436,820.26

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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.