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Finding the Fourth Proportional to 477,847.40, 716,771.10 and 426,237.80

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Solution

The fourth proportional to 477,847.40, 716,771.10 and 426,237.80 is: 639,356.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,847.40 : 716,771.10 = 426,237.80 : x
  2. Step 2: Convert to fraction form
    477,847.40/716,771.10 = 426,237.80/x
  3. Step 3: Cross multiply
    477,847.40x = 716,771.10 × 426,237.80
  4. Step 4: Simplify right side
    477,847.40x = 305,514,936,767.58
  5. Step 5: Solve for x
    x = 305,514,936,767.58/477,847.40
  6. Step 6: Final answer
    x = 639,356.70

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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.