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Finding the Fourth Proportional to 655,089.76, 904,013.40 and 368,609.68

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Solution

The fourth proportional to 655,089.76, 904,013.40 and 368,609.68 is: 508,675.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,089.76 : 904,013.40 = 368,609.68 : x
  2. Step 2: Convert to fraction form
    655,089.76/904,013.40 = 368,609.68/x
  3. Step 3: Cross multiply
    655,089.76x = 904,013.40 × 368,609.68
  4. Step 4: Simplify right side
    655,089.76x = 333,228,090,089.71
  5. Step 5: Solve for x
    x = 333,228,090,089.71/655,089.76
  6. Step 6: Final answer
    x = 508,675.47

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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.