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Finding the Fourth Proportional to 603,971.40, 904,920.30 and 287,747.40

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Solution

The fourth proportional to 603,971.40, 904,920.30 and 287,747.40 is: 431,127.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,971.40 : 904,920.30 = 287,747.40 : x
  2. Step 2: Convert to fraction form
    603,971.40/904,920.30 = 287,747.40/x
  3. Step 3: Cross multiply
    603,971.40x = 904,920.30 × 287,747.40
  4. Step 4: Simplify right side
    603,971.40x = 260,388,463,532.22
  5. Step 5: Solve for x
    x = 260,388,463,532.22/603,971.40
  6. Step 6: Final answer
    x = 431,127.14

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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.