Home / 779,615.69-1,075,869.65-421,919.69

Finding the Fourth Proportional to 779,615.69, 1,075,869.65 and 421,919.69

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Solution

The fourth proportional to 779,615.69, 1,075,869.65 and 421,919.69 is: 582,249.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,615.69 : 1,075,869.65 = 421,919.69 : x
  2. Step 2: Convert to fraction form
    779,615.69/1,075,869.65 = 421,919.69/x
  3. Step 3: Cross multiply
    779,615.69x = 1,075,869.65 × 421,919.69
  4. Step 4: Simplify right side
    779,615.69x = 453,930,589,208.41
  5. Step 5: Solve for x
    x = 453,930,589,208.41/779,615.69
  6. Step 6: Final answer
    x = 582,249.17

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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.