Home / 778,621.68-1,074,294.54-456,158.34

Finding the Fourth Proportional to 778,621.68, 1,074,294.54 and 456,158.34

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Solution

The fourth proportional to 778,621.68, 1,074,294.54 and 456,158.34 is: 629,379.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,621.68 : 1,074,294.54 = 456,158.34 : x
  2. Step 2: Convert to fraction form
    778,621.68/1,074,294.54 = 456,158.34/x
  3. Step 3: Cross multiply
    778,621.68x = 1,074,294.54 × 456,158.34
  4. Step 4: Simplify right side
    778,621.68x = 490,048,414,037.46
  5. Step 5: Solve for x
    x = 490,048,414,037.46/778,621.68
  6. Step 6: Final answer
    x = 629,379.36

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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.