Home / 779,620.75-1,075,876.65-421,924.75

Finding the Fourth Proportional to 779,620.75, 1,075,876.65 and 421,924.75

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Solution

The fourth proportional to 779,620.75, 1,075,876.65 and 421,924.75 is: 582,256.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,620.75 : 1,075,876.65 = 421,924.75 : x
  2. Step 2: Convert to fraction form
    779,620.75/1,075,876.65 = 421,924.75/x
  3. Step 3: Cross multiply
    779,620.75x = 1,075,876.65 × 421,924.75
  4. Step 4: Simplify right side
    779,620.75x = 453,938,986,582.09
  5. Step 5: Solve for x
    x = 453,938,986,582.09/779,620.75
  6. Step 6: Final answer
    x = 582,256.16

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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.