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Finding the Fourth Proportional to 655,215.50, 904,047.80 and 368,631.02

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Solution

The fourth proportional to 655,215.50, 904,047.80 and 368,631.02 is: 508,626.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,215.50 : 904,047.80 = 368,631.02 : x
  2. Step 2: Convert to fraction form
    655,215.50/904,047.80 = 368,631.02/x
  3. Step 3: Cross multiply
    655,215.50x = 904,047.80 × 368,631.02
  4. Step 4: Simplify right side
    655,215.50x = 333,260,062,642.76
  5. Step 5: Solve for x
    x = 333,260,062,642.76/655,215.50
  6. Step 6: Final answer
    x = 508,626.65

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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.