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Finding the Fourth Proportional to 677,568.42, 935,020.90 and 375,790.50

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Solution

The fourth proportional to 677,568.42, 935,020.90 and 375,790.50 is: 518,577.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,568.42 : 935,020.90 = 375,790.50 : x
  2. Step 2: Convert to fraction form
    677,568.42/935,020.90 = 375,790.50/x
  3. Step 3: Cross multiply
    677,568.42x = 935,020.90 × 375,790.50
  4. Step 4: Simplify right side
    677,568.42x = 351,371,971,521.45
  5. Step 5: Solve for x
    x = 351,371,971,521.45/677,568.42
  6. Step 6: Final answer
    x = 518,577.85

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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.