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Finding the Fourth Proportional to 565,553.98, 780,431.52 and 310,905.10

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Solution

The fourth proportional to 565,553.98, 780,431.52 and 310,905.10 is: 429,030.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,553.98 : 780,431.52 = 310,905.10 : x
  2. Step 2: Convert to fraction form
    565,553.98/780,431.52 = 310,905.10/x
  3. Step 3: Cross multiply
    565,553.98x = 780,431.52 × 310,905.10
  4. Step 4: Simplify right side
    565,553.98x = 242,640,139,768.75
  5. Step 5: Solve for x
    x = 242,640,139,768.75/565,553.98
  6. Step 6: Final answer
    x = 429,030.91

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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.