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Finding the Fourth Proportional to 655,721.34, 904,886.55 and 369,244.86

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Solution

The fourth proportional to 655,721.34, 904,886.55 and 369,244.86 is: 509,552.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,721.34 : 904,886.55 = 369,244.86 : x
  2. Step 2: Convert to fraction form
    655,721.34/904,886.55 = 369,244.86/x
  3. Step 3: Cross multiply
    655,721.34x = 904,886.55 × 369,244.86
  4. Step 4: Simplify right side
    655,721.34x = 334,124,707,470.63
  5. Step 5: Solve for x
    x = 334,124,707,470.63/655,721.34
  6. Step 6: Final answer
    x = 509,552.90

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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.