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Finding the Fourth Proportional to 553,669.30, 829,121.55 and 365,662.90

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Solution

The fourth proportional to 553,669.30, 829,121.55 and 365,662.90 is: 547,581.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,669.30 : 829,121.55 = 365,662.90 : x
  2. Step 2: Convert to fraction form
    553,669.30/829,121.55 = 365,662.90/x
  3. Step 3: Cross multiply
    553,669.30x = 829,121.55 × 365,662.90
  4. Step 4: Simplify right side
    553,669.30x = 303,178,990,425.50
  5. Step 5: Solve for x
    x = 303,178,990,425.50/553,669.30
  6. Step 6: Final answer
    x = 547,581.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.