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Finding the Fourth Proportional to 559,311.84, 771,823.77 and 317,562.69

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Solution

The fourth proportional to 559,311.84, 771,823.77 and 317,562.69 is: 438,221.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,311.84 : 771,823.77 = 317,562.69 : x
  2. Step 2: Convert to fraction form
    559,311.84/771,823.77 = 317,562.69/x
  3. Step 3: Cross multiply
    559,311.84x = 771,823.77 × 317,562.69
  4. Step 4: Simplify right side
    559,311.84x = 245,102,432,607.14
  5. Step 5: Solve for x
    x = 245,102,432,607.14/559,311.84
  6. Step 6: Final answer
    x = 438,221.43

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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.