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Finding the Fourth Proportional to 633,257.28, 873,855 and 346,780.80

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Solution

The fourth proportional to 633,257.28, 873,855 and 346,780.80 is: 478,535.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,257.28 : 873,855 = 346,780.80 : x
  2. Step 2: Convert to fraction form
    633,257.28/873,855 = 346,780.80/x
  3. Step 3: Cross multiply
    633,257.28x = 873,855 × 346,780.80
  4. Step 4: Simplify right side
    633,257.28x = 303,036,135,984
  5. Step 5: Solve for x
    x = 303,036,135,984/633,257.28
  6. Step 6: Final answer
    x = 478,535.57

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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.