Home / 808,520.10-1,212,780.15-387,579.30

Finding the Fourth Proportional to 808,520.10, 1,212,780.15 and 387,579.30

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Solution

The fourth proportional to 808,520.10, 1,212,780.15 and 387,579.30 is: 581,368.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,520.10 : 1,212,780.15 = 387,579.30 : x
  2. Step 2: Convert to fraction form
    808,520.10/1,212,780.15 = 387,579.30/x
  3. Step 3: Cross multiply
    808,520.10x = 1,212,780.15 × 387,579.30
  4. Step 4: Simplify right side
    808,520.10x = 470,048,481,590.90
  5. Step 5: Solve for x
    x = 470,048,481,590.90/808,520.10
  6. Step 6: Final answer
    x = 581,368.95

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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.