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Finding the Fourth Proportional to 800,640.90, 1,104,856.95 and 456,587.56

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Solution

The fourth proportional to 800,640.90, 1,104,856.95 and 456,587.56 is: 630,075.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,640.90 : 1,104,856.95 = 456,587.56 : x
  2. Step 2: Convert to fraction form
    800,640.90/1,104,856.95 = 456,587.56/x
  3. Step 3: Cross multiply
    800,640.90x = 1,104,856.95 × 456,587.56
  4. Step 4: Simplify right side
    800,640.90x = 504,463,942,042.82
  5. Step 5: Solve for x
    x = 504,463,942,042.82/800,640.90
  6. Step 6: Final answer
    x = 630,075.16

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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.