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Finding the Fourth Proportional to 565,750.20, 780,715.05 and 311,099.16

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Solution

The fourth proportional to 565,750.20, 780,715.05 and 311,099.16 is: 429,305.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,750.20 : 780,715.05 = 311,099.16 : x
  2. Step 2: Convert to fraction form
    565,750.20/780,715.05 = 311,099.16/x
  3. Step 3: Cross multiply
    565,750.20x = 780,715.05 × 311,099.16
  4. Step 4: Simplify right side
    565,750.20x = 242,879,796,254.36
  5. Step 5: Solve for x
    x = 242,879,796,254.36/565,750.20
  6. Step 6: Final answer
    x = 429,305.72

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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.