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Finding the Fourth Proportional to 660,008.44, 988,338.05 and 553,111.30

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Solution

The fourth proportional to 660,008.44, 988,338.05 and 553,111.30 is: 828,263.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,008.44 : 988,338.05 = 553,111.30 : x
  2. Step 2: Convert to fraction form
    660,008.44/988,338.05 = 553,111.30/x
  3. Step 3: Cross multiply
    660,008.44x = 988,338.05 × 553,111.30
  4. Step 4: Simplify right side
    660,008.44x = 546,660,938,438.56
  5. Step 5: Solve for x
    x = 546,660,938,438.56/660,008.44
  6. Step 6: Final answer
    x = 828,263.56

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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.