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Finding the Fourth Proportional to 655,459.72, 904,620.54 and 369,035.80

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Solution

The fourth proportional to 655,459.72, 904,620.54 and 369,035.80 is: 509,317.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,459.72 : 904,620.54 = 369,035.80 : x
  2. Step 2: Convert to fraction form
    655,459.72/904,620.54 = 369,035.80/x
  3. Step 3: Cross multiply
    655,459.72x = 904,620.54 × 369,035.80
  4. Step 4: Simplify right side
    655,459.72x = 333,837,364,675.33
  5. Step 5: Solve for x
    x = 333,837,364,675.33/655,459.72
  6. Step 6: Final answer
    x = 509,317.89

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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.