Home / 778,388.23-1,074,151.40-456,312.85

Finding the Fourth Proportional to 778,388.23, 1,074,151.40 and 456,312.85

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Solution

The fourth proportional to 778,388.23, 1,074,151.40 and 456,312.85 is: 629,697.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,388.23 : 1,074,151.40 = 456,312.85 : x
  2. Step 2: Convert to fraction form
    778,388.23/1,074,151.40 = 456,312.85/x
  3. Step 3: Cross multiply
    778,388.23x = 1,074,151.40 × 456,312.85
  4. Step 4: Simplify right side
    778,388.23x = 490,149,086,665.49
  5. Step 5: Solve for x
    x = 490,149,086,665.49/778,388.23
  6. Step 6: Final answer
    x = 629,697.45

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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.