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Finding the Fourth Proportional to 710,328.09, 980,486.37 and 565,399.72

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Solution

The fourth proportional to 710,328.09, 980,486.37 and 565,399.72 is: 780,437.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,328.09 : 980,486.37 = 565,399.72 : x
  2. Step 2: Convert to fraction form
    710,328.09/980,486.37 = 565,399.72/x
  3. Step 3: Cross multiply
    710,328.09x = 980,486.37 × 565,399.72
  4. Step 4: Simplify right side
    710,328.09x = 554,366,716,610.60
  5. Step 5: Solve for x
    x = 554,366,716,610.60/710,328.09
  6. Step 6: Final answer
    x = 780,437.55

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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.