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Finding the Fourth Proportional to 710,424.52, 980,399.95 and 388,154.58

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Solution

The fourth proportional to 710,424.52, 980,399.95 and 388,154.58 is: 535,661.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,424.52 : 980,399.95 = 388,154.58 : x
  2. Step 2: Convert to fraction form
    710,424.52/980,399.95 = 388,154.58/x
  3. Step 3: Cross multiply
    710,424.52x = 980,399.95 × 388,154.58
  4. Step 4: Simplify right side
    710,424.52x = 380,546,728,883.50
  5. Step 5: Solve for x
    x = 380,546,728,883.50/710,424.52
  6. Step 6: Final answer
    x = 535,661.03

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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.