Home / 779,490.25-1,075,699.79-421,794.25

Finding the Fourth Proportional to 779,490.25, 1,075,699.79 and 421,794.25

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Solution

The fourth proportional to 779,490.25, 1,075,699.79 and 421,794.25 is: 582,077.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,490.25 : 1,075,699.79 = 421,794.25 : x
  2. Step 2: Convert to fraction form
    779,490.25/1,075,699.79 = 421,794.25/x
  3. Step 3: Cross multiply
    779,490.25x = 1,075,699.79 × 421,794.25
  4. Step 4: Simplify right side
    779,490.25x = 453,723,986,148.21
  5. Step 5: Solve for x
    x = 453,723,986,148.21/779,490.25
  6. Step 6: Final answer
    x = 582,077.82

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Double scale
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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.