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Finding the Fourth Proportional to 655,560.98, 904,673.90 and 383,680.64

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Solution

The fourth proportional to 655,560.98, 904,673.90 and 383,680.64 is: 529,479.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,560.98 : 904,673.90 = 383,680.64 : x
  2. Step 2: Convert to fraction form
    655,560.98/904,673.90 = 383,680.64/x
  3. Step 3: Cross multiply
    655,560.98x = 904,673.90 × 383,680.64
  4. Step 4: Simplify right side
    655,560.98x = 347,105,854,501.52
  5. Step 5: Solve for x
    x = 347,105,854,501.52/655,560.98
  6. Step 6: Final answer
    x = 529,479.13

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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.