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Finding the Fourth Proportional to 710,460.32, 980,423.84 and 388,163.52

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Solution

The fourth proportional to 710,460.32, 980,423.84 and 388,163.52 is: 535,659.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,460.32 : 980,423.84 = 388,163.52 : x
  2. Step 2: Convert to fraction form
    710,460.32/980,423.84 = 388,163.52/x
  3. Step 3: Cross multiply
    710,460.32x = 980,423.84 × 388,163.52
  4. Step 4: Simplify right side
    710,460.32x = 380,564,768,826.32
  5. Step 5: Solve for x
    x = 380,564,768,826.32/710,460.32
  6. Step 6: Final answer
    x = 535,659.43

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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.