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Finding the Fourth Proportional to 565,386.39, 780,200.22 and 310,737.78

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Solution

The fourth proportional to 565,386.39, 780,200.22 and 310,737.78 is: 428,800.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,386.39 : 780,200.22 = 310,737.78 : x
  2. Step 2: Convert to fraction form
    565,386.39/780,200.22 = 310,737.78/x
  3. Step 3: Cross multiply
    565,386.39x = 780,200.22 × 310,737.78
  4. Step 4: Simplify right side
    565,386.39x = 242,437,684,318.31
  5. Step 5: Solve for x
    x = 242,437,684,318.31/565,386.39
  6. Step 6: Final answer
    x = 428,800.00

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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.