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Finding the Fourth Proportional to 671,145.91, 926,181.49 and 369,339.91

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Solution

The fourth proportional to 671,145.91, 926,181.49 and 369,339.91 is: 509,689.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,145.91 : 926,181.49 = 369,339.91 : x
  2. Step 2: Convert to fraction form
    671,145.91/926,181.49 = 369,339.91/x
  3. Step 3: Cross multiply
    671,145.91x = 926,181.49 × 369,339.91
  4. Step 4: Simplify right side
    671,145.91x = 342,075,784,921.46
  5. Step 5: Solve for x
    x = 342,075,784,921.46/671,145.91
  6. Step 6: Final answer
    x = 509,689.15

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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.