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Finding the Fourth Proportional to 516,803.58, 713,228.85 and 310,079.70

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Solution

The fourth proportional to 516,803.58, 713,228.85 and 310,079.70 is: 427,933.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,803.58 : 713,228.85 = 310,079.70 : x
  2. Step 2: Convert to fraction form
    516,803.58/713,228.85 = 310,079.70/x
  3. Step 3: Cross multiply
    516,803.58x = 713,228.85 × 310,079.70
  4. Step 4: Simplify right side
    516,803.58x = 221,157,787,839.35
  5. Step 5: Solve for x
    x = 221,157,787,839.35/516,803.58
  6. Step 6: Final answer
    x = 427,933.93

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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.