Home / 779,616.75-1,075,871.66-421,920.75

Finding the Fourth Proportional to 779,616.75, 1,075,871.66 and 421,920.75

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Solution

The fourth proportional to 779,616.75, 1,075,871.66 and 421,920.75 is: 582,250.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,616.75 : 1,075,871.66 = 421,920.75 : x
  2. Step 2: Convert to fraction form
    779,616.75/1,075,871.66 = 421,920.75/x
  3. Step 3: Cross multiply
    779,616.75x = 1,075,871.66 × 421,920.75
  4. Step 4: Simplify right side
    779,616.75x = 453,932,575,581.34
  5. Step 5: Solve for x
    x = 453,932,575,581.34/779,616.75
  6. Step 6: Final answer
    x = 582,250.93

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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.