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Finding the Fourth Proportional to 620,867.10, 930,521.90 and 265,463.94

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Solution

The fourth proportional to 620,867.10, 930,521.90 and 265,463.94 is: 397,862.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,867.10 : 930,521.90 = 265,463.94 : x
  2. Step 2: Convert to fraction form
    620,867.10/930,521.90 = 265,463.94/x
  3. Step 3: Cross multiply
    620,867.10x = 930,521.90 × 265,463.94
  4. Step 4: Simplify right side
    620,867.10x = 247,020,009,830.29
  5. Step 5: Solve for x
    x = 247,020,009,830.29/620,867.10
  6. Step 6: Final answer
    x = 397,862.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.