Home / 779,509.13-1,075,725.83-421,813.13

Finding the Fourth Proportional to 779,509.13, 1,075,725.83 and 421,813.13

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Solution

The fourth proportional to 779,509.13, 1,075,725.83 and 421,813.13 is: 582,103.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,509.13 : 1,075,725.83 = 421,813.13 : x
  2. Step 2: Convert to fraction form
    779,509.13/1,075,725.83 = 421,813.13/x
  3. Step 3: Cross multiply
    779,509.13x = 1,075,725.83 × 421,813.13
  4. Step 4: Simplify right side
    779,509.13x = 453,755,275,050.05
  5. Step 5: Solve for x
    x = 453,755,275,050.05/779,509.13
  6. Step 6: Final answer
    x = 582,103.87

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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.