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Finding the Fourth Proportional to 565,287.66, 780,146.64 and 310,688.46

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Solution

The fourth proportional to 565,287.66, 780,146.64 and 310,688.46 is: 428,777.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,287.66 : 780,146.64 = 310,688.46 : x
  2. Step 2: Convert to fraction form
    565,287.66/780,146.64 = 310,688.46/x
  3. Step 3: Cross multiply
    565,287.66x = 780,146.64 × 310,688.46
  4. Step 4: Simplify right side
    565,287.66x = 242,382,558,155.77
  5. Step 5: Solve for x
    x = 242,382,558,155.77/565,287.66
  6. Step 6: Final answer
    x = 428,777.37

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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.