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Finding the Fourth Proportional to 655,478.68, 904,646.79 and 369,054.58

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Solution

The fourth proportional to 655,478.68, 904,646.79 and 369,054.58 is: 509,343.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,478.68 : 904,646.79 = 369,054.58 : x
  2. Step 2: Convert to fraction form
    655,478.68/904,646.79 = 369,054.58/x
  3. Step 3: Cross multiply
    655,478.68x = 904,646.79 × 369,054.58
  4. Step 4: Simplify right side
    655,478.68x = 333,864,034,763.29
  5. Step 5: Solve for x
    x = 333,864,034,763.29/655,478.68
  6. Step 6: Final answer
    x = 509,343.85

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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.