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Finding the Fourth Proportional to 655,527.40, 904,653.05 and 379,894.70

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Solution

The fourth proportional to 655,527.40, 904,653.05 and 379,894.70 is: 524,269.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,527.40 : 904,653.05 = 379,894.70 : x
  2. Step 2: Convert to fraction form
    655,527.40/904,653.05 = 379,894.70/x
  3. Step 3: Cross multiply
    655,527.40x = 904,653.05 × 379,894.70
  4. Step 4: Simplify right side
    655,527.40x = 343,672,899,395.99
  5. Step 5: Solve for x
    x = 343,672,899,395.99/655,527.40
  6. Step 6: Final answer
    x = 524,269.31

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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.