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Finding the Fourth Proportional to 710,589.23, 980,615.59 and 388,299.34

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Solution

The fourth proportional to 710,589.23, 980,615.59 and 388,299.34 is: 535,854.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,589.23 : 980,615.59 = 388,299.34 : x
  2. Step 2: Convert to fraction form
    710,589.23/980,615.59 = 388,299.34/x
  3. Step 3: Cross multiply
    710,589.23x = 980,615.59 × 388,299.34
  4. Step 4: Simplify right side
    710,589.23x = 380,772,382,968.42
  5. Step 5: Solve for x
    x = 380,772,382,968.42/710,589.23
  6. Step 6: Final answer
    x = 535,854.43

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1.5x scale

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.