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Finding the Fourth Proportional to 660,006.56, 988,335.24 and 553,109.42

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Solution

The fourth proportional to 660,006.56, 988,335.24 and 553,109.42 is: 828,260.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,006.56 : 988,335.24 = 553,109.42 : x
  2. Step 2: Convert to fraction form
    660,006.56/988,335.24 = 553,109.42/x
  3. Step 3: Cross multiply
    660,006.56x = 988,335.24 × 553,109.42
  4. Step 4: Simplify right side
    660,006.56x = 546,657,531,758.64
  5. Step 5: Solve for x
    x = 546,657,531,758.64/660,006.56
  6. Step 6: Final answer
    x = 828,260.75

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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.