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Finding the Fourth Proportional to 603,399.84, 903,721.68 and 288,079.20

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Solution

The fourth proportional to 603,399.84, 903,721.68 and 288,079.20 is: 431,460.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,399.84 : 903,721.68 = 288,079.20 : x
  2. Step 2: Convert to fraction form
    603,399.84/903,721.68 = 288,079.20/x
  3. Step 3: Cross multiply
    603,399.84x = 903,721.68 × 288,079.20
  4. Step 4: Simplify right side
    603,399.84x = 260,343,418,597.06
  5. Step 5: Solve for x
    x = 260,343,418,597.06/603,399.84
  6. Step 6: Final answer
    x = 431,460.87

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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.