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Finding the Fourth Proportional to 389,530.08, 584,295.12 and 355,004.64

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Solution

The fourth proportional to 389,530.08, 584,295.12 and 355,004.64 is: 532,506.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,530.08 : 584,295.12 = 355,004.64 : x
  2. Step 2: Convert to fraction form
    389,530.08/584,295.12 = 355,004.64/x
  3. Step 3: Cross multiply
    389,530.08x = 584,295.12 × 355,004.64
  4. Step 4: Simplify right side
    389,530.08x = 207,427,478,729.36
  5. Step 5: Solve for x
    x = 207,427,478,729.36/389,530.08
  6. Step 6: Final answer
    x = 532,506.96

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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.