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Finding the Fourth Proportional to 559,212.58, 771,782.83 and 317,572.77

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Solution

The fourth proportional to 559,212.58, 771,782.83 and 317,572.77 is: 438,289.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,212.58 : 771,782.83 = 317,572.77 : x
  2. Step 2: Convert to fraction form
    559,212.58/771,782.83 = 317,572.77/x
  3. Step 3: Cross multiply
    559,212.58x = 771,782.83 × 317,572.77
  4. Step 4: Simplify right side
    559,212.58x = 245,097,205,714.76
  5. Step 5: Solve for x
    x = 245,097,205,714.76/559,212.58
  6. Step 6: Final answer
    x = 438,289.87

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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.