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Finding the Fourth Proportional to 565,727.76, 780,717.72 and 311,078.76

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Solution

The fourth proportional to 565,727.76, 780,717.72 and 311,078.76 is: 429,296.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,727.76 : 780,717.72 = 311,078.76 : x
  2. Step 2: Convert to fraction form
    565,727.76/780,717.72 = 311,078.76/x
  3. Step 3: Cross multiply
    565,727.76x = 780,717.72 × 311,078.76
  4. Step 4: Simplify right side
    565,727.76x = 242,864,700,247.63
  5. Step 5: Solve for x
    x = 242,864,700,247.63/565,727.76
  6. Step 6: Final answer
    x = 429,296.06

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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.