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Finding the Fourth Proportional to 779,412, 1,075,589.28 and 439,872.96

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Solution

The fourth proportional to 779,412, 1,075,589.28 and 439,872.96 is: 607,025.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,412 : 1,075,589.28 = 439,872.96 : x
  2. Step 2: Convert to fraction form
    779,412/1,075,589.28 = 439,872.96/x
  3. Step 3: Cross multiply
    779,412x = 1,075,589.28 × 439,872.96
  4. Step 4: Simplify right side
    779,412x = 473,122,640,337.87
  5. Step 5: Solve for x
    x = 473,122,640,337.87/779,412
  6. Step 6: Final answer
    x = 607,025.09

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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.