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Finding the Fourth Proportional to 565,616.64, 780,552.96 and 310,983.84

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Solution

The fourth proportional to 565,616.64, 780,552.96 and 310,983.84 is: 429,158.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,616.64 : 780,552.96 = 310,983.84 : x
  2. Step 2: Convert to fraction form
    565,616.64/780,552.96 = 310,983.84/x
  3. Step 3: Cross multiply
    565,616.64x = 780,552.96 × 310,983.84
  4. Step 4: Simplify right side
    565,616.64x = 242,739,356,824.17
  5. Step 5: Solve for x
    x = 242,739,356,824.17/565,616.64
  6. Step 6: Final answer
    x = 429,158.80

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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.