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Finding the Fourth Proportional to 782,953, 1,080,476.22 and 425,257

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Solution

The fourth proportional to 782,953, 1,080,476.22 and 425,257 is: 586,855.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,953 : 1,080,476.22 = 425,257 : x
  2. Step 2: Convert to fraction form
    782,953/1,080,476.22 = 425,257/x
  3. Step 3: Cross multiply
    782,953x = 1,080,476.22 × 425,257
  4. Step 4: Simplify right side
    782,953x = 459,480,075,888.54
  5. Step 5: Solve for x
    x = 459,480,075,888.54/782,953
  6. Step 6: Final answer
    x = 586,855.25

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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.