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Finding the Fourth Proportional to 553,373.81, 763,710.34 and 323,917.19

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Solution

The fourth proportional to 553,373.81, 763,710.34 and 323,917.19 is: 447,037.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,373.81 : 763,710.34 = 323,917.19 : x
  2. Step 2: Convert to fraction form
    553,373.81/763,710.34 = 323,917.19/x
  3. Step 3: Cross multiply
    553,373.81x = 763,710.34 × 323,917.19
  4. Step 4: Simplify right side
    553,373.81x = 247,378,907,306.75
  5. Step 5: Solve for x
    x = 247,378,907,306.75/553,373.81
  6. Step 6: Final answer
    x = 447,037.61

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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.