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Finding the Fourth Proportional to 710,271.18, 980,157.92 and 387,982.71

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Solution

The fourth proportional to 710,271.18, 980,157.92 and 387,982.71 is: 535,407.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,271.18 : 980,157.92 = 387,982.71 : x
  2. Step 2: Convert to fraction form
    710,271.18/980,157.92 = 387,982.71/x
  3. Step 3: Cross multiply
    710,271.18x = 980,157.92 × 387,982.71
  4. Step 4: Simplify right side
    710,271.18x = 380,284,324,089.65
  5. Step 5: Solve for x
    x = 380,284,324,089.65/710,271.18
  6. Step 6: Final answer
    x = 535,407.23

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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.