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Finding the Fourth Proportional to 710,468.93, 980,435.67 and 388,172.12

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Solution

The fourth proportional to 710,468.93, 980,435.67 and 388,172.12 is: 535,671.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,468.93 : 980,435.67 = 388,172.12 : x
  2. Step 2: Convert to fraction form
    710,468.93/980,435.67 = 388,172.12/x
  3. Step 3: Cross multiply
    710,468.93x = 980,435.67 × 388,172.12
  4. Step 4: Simplify right side
    710,468.93x = 380,577,787,645.34
  5. Step 5: Solve for x
    x = 380,577,787,645.34/710,468.93
  6. Step 6: Final answer
    x = 535,671.26

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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.