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Finding the Fourth Proportional to 660,006.30, 988,334.83 and 553,109.15

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Solution

The fourth proportional to 660,006.30, 988,334.83 and 553,109.15 is: 828,260.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,006.30 : 988,334.83 = 553,109.15 : x
  2. Step 2: Convert to fraction form
    660,006.30/988,334.83 = 553,109.15/x
  3. Step 3: Cross multiply
    660,006.30x = 988,334.83 × 553,109.15
  4. Step 4: Simplify right side
    660,006.30x = 546,657,037,736.70
  5. Step 5: Solve for x
    x = 546,657,037,736.70/660,006.30
  6. Step 6: Final answer
    x = 828,260.33

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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.