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Finding the Fourth Proportional to 710,328.97, 980,487.58 and 565,400.60

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Solution

The fourth proportional to 710,328.97, 980,487.58 and 565,400.60 is: 780,438.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,328.97 : 980,487.58 = 565,400.60 : x
  2. Step 2: Convert to fraction form
    710,328.97/980,487.58 = 565,400.60/x
  3. Step 3: Cross multiply
    710,328.97x = 980,487.58 × 565,400.60
  4. Step 4: Simplify right side
    710,328.97x = 554,368,261,122.11
  5. Step 5: Solve for x
    x = 554,368,261,122.11/710,328.97
  6. Step 6: Final answer
    x = 780,438.77

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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.