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Finding the Fourth Proportional to 405,002.80, 606,337.80 and 393,338.80

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Solution

The fourth proportional to 405,002.80, 606,337.80 and 393,338.80 is: 588,875.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,002.80 : 606,337.80 = 393,338.80 : x
  2. Step 2: Convert to fraction form
    405,002.80/606,337.80 = 393,338.80/x
  3. Step 3: Cross multiply
    405,002.80x = 606,337.80 × 393,338.80
  4. Step 4: Simplify right side
    405,002.80x = 238,496,182,646.64
  5. Step 5: Solve for x
    x = 238,496,182,646.64/405,002.80
  6. Step 6: Final answer
    x = 588,875.39

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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.