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Finding the Fourth Proportional to 710,557.30, 980,567.13 and 388,269.64

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Solution

The fourth proportional to 710,557.30, 980,567.13 and 388,269.64 is: 535,811.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,557.30 : 980,567.13 = 388,269.64 : x
  2. Step 2: Convert to fraction form
    710,557.30/980,567.13 = 388,269.64/x
  3. Step 3: Cross multiply
    710,557.30x = 980,567.13 × 388,269.64
  4. Step 4: Simplify right side
    710,557.30x = 380,724,446,560.93
  5. Step 5: Solve for x
    x = 380,724,446,560.93/710,557.30
  6. Step 6: Final answer
    x = 535,811.04

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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.