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Finding the Fourth Proportional to 603,555.80, 904,296.90 and 393,085.40

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Solution

The fourth proportional to 603,555.80, 904,296.90 and 393,085.40 is: 588,952.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,555.80 : 904,296.90 = 393,085.40 : x
  2. Step 2: Convert to fraction form
    603,555.80/904,296.90 = 393,085.40/x
  3. Step 3: Cross multiply
    603,555.80x = 904,296.90 × 393,085.40
  4. Step 4: Simplify right side
    603,555.80x = 355,465,908,655.26
  5. Step 5: Solve for x
    x = 355,465,908,655.26/603,555.80
  6. Step 6: Final answer
    x = 588,952.85

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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.