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Finding the Fourth Proportional to 710,349.80, 980,297.17 and 388,080.77

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Solution

The fourth proportional to 710,349.80, 980,297.17 and 388,080.77 is: 535,559.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,349.80 : 980,297.17 = 388,080.77 : x
  2. Step 2: Convert to fraction form
    710,349.80/980,297.17 = 388,080.77/x
  3. Step 3: Cross multiply
    710,349.80x = 980,297.17 × 388,080.77
  4. Step 4: Simplify right side
    710,349.80x = 380,434,474,690.73
  5. Step 5: Solve for x
    x = 380,434,474,690.73/710,349.80
  6. Step 6: Final answer
    x = 535,559.35

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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.