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Finding the Fourth Proportional to 779,599.88, 1,075,847.84 and 421,903.88

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Solution

The fourth proportional to 779,599.88, 1,075,847.84 and 421,903.88 is: 582,227.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,599.88 : 1,075,847.84 = 421,903.88 : x
  2. Step 2: Convert to fraction form
    779,599.88/1,075,847.84 = 421,903.88/x
  3. Step 3: Cross multiply
    779,599.88x = 1,075,847.84 × 421,903.88
  4. Step 4: Simplify right side
    779,599.88x = 453,904,370,496.86
  5. Step 5: Solve for x
    x = 453,904,370,496.86/779,599.88
  6. Step 6: Final answer
    x = 582,227.35

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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.