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Finding the Fourth Proportional to 565,797.49, 780,776.74 and 320,798.72

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Solution

The fourth proportional to 565,797.49, 780,776.74 and 320,798.72 is: 442,688.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,797.49 : 780,776.74 = 320,798.72 : x
  2. Step 2: Convert to fraction form
    565,797.49/780,776.74 = 320,798.72/x
  3. Step 3: Cross multiply
    565,797.49x = 780,776.74 × 320,798.72
  4. Step 4: Simplify right side
    565,797.49x = 250,472,178,797.77
  5. Step 5: Solve for x
    x = 250,472,178,797.77/565,797.49
  6. Step 6: Final answer
    x = 442,688.74

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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.