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Finding the Fourth Proportional to 714,690.32, 986,079.96 and 408,703.56

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Solution

The fourth proportional to 714,690.32, 986,079.96 and 408,703.56 is: 563,900.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,690.32 : 986,079.96 = 408,703.56 : x
  2. Step 2: Convert to fraction form
    714,690.32/986,079.96 = 408,703.56/x
  3. Step 3: Cross multiply
    714,690.32x = 986,079.96 × 408,703.56
  4. Step 4: Simplify right side
    714,690.32x = 403,014,390,096.66
  5. Step 5: Solve for x
    x = 403,014,390,096.66/714,690.32
  6. Step 6: Final answer
    x = 563,900.73

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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.