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Finding the Fourth Proportional to 671,320.16, 926,422.08 and 369,512

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Solution

The fourth proportional to 671,320.16, 926,422.08 and 369,512 is: 509,926.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,320.16 : 926,422.08 = 369,512 : x
  2. Step 2: Convert to fraction form
    671,320.16/926,422.08 = 369,512/x
  3. Step 3: Cross multiply
    671,320.16x = 926,422.08 × 369,512
  4. Step 4: Simplify right side
    671,320.16x = 342,324,075,624.96
  5. Step 5: Solve for x
    x = 342,324,075,624.96/671,320.16
  6. Step 6: Final answer
    x = 509,926.70

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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.