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Finding the Fourth Proportional to 883,137.32, 1,218,888.54 and 520,540.01

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Solution

The fourth proportional to 883,137.32, 1,218,888.54 and 520,540.01 is: 718,438.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    883,137.32 : 1,218,888.54 = 520,540.01 : x
  2. Step 2: Convert to fraction form
    883,137.32/1,218,888.54 = 520,540.01/x
  3. Step 3: Cross multiply
    883,137.32x = 1,218,888.54 × 520,540.01
  4. Step 4: Simplify right side
    883,137.32x = 634,480,252,800.49
  5. Step 5: Solve for x
    x = 634,480,252,800.49/883,137.32
  6. Step 6: Final answer
    x = 718,438.95

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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.