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Finding the Fourth Proportional to 985,544.60, 1,359,970.08 and 555,930.32

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Solution

The fourth proportional to 985,544.60, 1,359,970.08 and 555,930.32 is: 767,137.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,544.60 : 1,359,970.08 = 555,930.32 : x
  2. Step 2: Convert to fraction form
    985,544.60/1,359,970.08 = 555,930.32/x
  3. Step 3: Cross multiply
    985,544.60x = 1,359,970.08 × 555,930.32
  4. Step 4: Simplify right side
    985,544.60x = 756,048,601,764.83
  5. Step 5: Solve for x
    x = 756,048,601,764.83/985,544.60
  6. Step 6: Final answer
    x = 767,137.89

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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.