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Finding the Fourth Proportional to 660,740.60, 991,110.90 and 548,644.70

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Solution

The fourth proportional to 660,740.60, 991,110.90 and 548,644.70 is: 822,967.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,740.60 : 991,110.90 = 548,644.70 : x
  2. Step 2: Convert to fraction form
    660,740.60/991,110.90 = 548,644.70/x
  3. Step 3: Cross multiply
    660,740.60x = 991,110.90 × 548,644.70
  4. Step 4: Simplify right side
    660,740.60x = 543,767,742,397.23
  5. Step 5: Solve for x
    x = 543,767,742,397.23/660,740.60
  6. Step 6: Final answer
    x = 822,967.05

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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.