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Finding the Fourth Proportional to 710,352.81, 980,287.54 and 388,068.29

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Solution

The fourth proportional to 710,352.81, 980,287.54 and 388,068.29 is: 535,534.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,352.81 : 980,287.54 = 388,068.29 : x
  2. Step 2: Convert to fraction form
    710,352.81/980,287.54 = 388,068.29/x
  3. Step 3: Cross multiply
    710,352.81x = 980,287.54 × 388,068.29
  4. Step 4: Simplify right side
    710,352.81x = 380,418,509,356.11
  5. Step 5: Solve for x
    x = 380,418,509,356.11/710,352.81
  6. Step 6: Final answer
    x = 535,534.60

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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.