Home / 779,575.64-1,075,814.38-421,879.64

Finding the Fourth Proportional to 779,575.64, 1,075,814.38 and 421,879.64

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Solution

The fourth proportional to 779,575.64, 1,075,814.38 and 421,879.64 is: 582,193.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,575.64 : 1,075,814.38 = 421,879.64 : x
  2. Step 2: Convert to fraction form
    779,575.64/1,075,814.38 = 421,879.64/x
  3. Step 3: Cross multiply
    779,575.64x = 1,075,814.38 × 421,879.64
  4. Step 4: Simplify right side
    779,575.64x = 453,864,185,727.49
  5. Step 5: Solve for x
    x = 453,864,185,727.49/779,575.64
  6. Step 6: Final answer
    x = 582,193.90

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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.