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Finding the Fourth Proportional to 424,739.40, 637,108.32 and 291,214.86

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Solution

The fourth proportional to 424,739.40, 637,108.32 and 291,214.86 is: 436,821.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,739.40 : 637,108.32 = 291,214.86 : x
  2. Step 2: Convert to fraction form
    424,739.40/637,108.32 = 291,214.86/x
  3. Step 3: Cross multiply
    424,739.40x = 637,108.32 × 291,214.86
  4. Step 4: Simplify right side
    424,739.40x = 185,535,410,213.64
  5. Step 5: Solve for x
    x = 185,535,410,213.64/424,739.40
  6. Step 6: Final answer
    x = 436,821.76

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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.