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Finding the Fourth Proportional to 655,775.88, 904,953 and 369,289.76

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Solution

The fourth proportional to 655,775.88, 904,953 and 369,289.76 is: 509,609.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,775.88 : 904,953 = 369,289.76 : x
  2. Step 2: Convert to fraction form
    655,775.88/904,953 = 369,289.76/x
  3. Step 3: Cross multiply
    655,775.88x = 904,953 × 369,289.76
  4. Step 4: Simplify right side
    655,775.88x = 334,189,876,181.28
  5. Step 5: Solve for x
    x = 334,189,876,181.28/655,775.88
  6. Step 6: Final answer
    x = 509,609.89

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1.5x scale

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.