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Finding the Fourth Proportional to 655,156.89, 904,113.63 and 368,681.76

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Solution

The fourth proportional to 655,156.89, 904,113.63 and 368,681.76 is: 508,779.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,156.89 : 904,113.63 = 368,681.76 : x
  2. Step 2: Convert to fraction form
    655,156.89/904,113.63 = 368,681.76/x
  3. Step 3: Cross multiply
    655,156.89x = 904,113.63 × 368,681.76
  4. Step 4: Simplify right side
    655,156.89x = 333,330,204,348.39
  5. Step 5: Solve for x
    x = 333,330,204,348.39/655,156.89
  6. Step 6: Final answer
    x = 508,779.21

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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.