Home / 779,538.84-1,075,767.21-421,842.84

Finding the Fourth Proportional to 779,538.84, 1,075,767.21 and 421,842.84

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Solution

The fourth proportional to 779,538.84, 1,075,767.21 and 421,842.84 is: 582,145.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,538.84 : 1,075,767.21 = 421,842.84 : x
  2. Step 2: Convert to fraction form
    779,538.84/1,075,767.21 = 421,842.84/x
  3. Step 3: Cross multiply
    779,538.84x = 1,075,767.21 × 421,842.84
  4. Step 4: Simplify right side
    779,538.84x = 453,804,695,045.28
  5. Step 5: Solve for x
    x = 453,804,695,045.28/779,538.84
  6. Step 6: Final answer
    x = 582,145.07

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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.