Home / 772,366.17-1,065,899.03-428,180.21

Finding the Fourth Proportional to 772,366.17, 1,065,899.03 and 428,180.21

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Solution

The fourth proportional to 772,366.17, 1,065,899.03 and 428,180.21 is: 590,907.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,366.17 : 1,065,899.03 = 428,180.21 : x
  2. Step 2: Convert to fraction form
    772,366.17/1,065,899.03 = 428,180.21/x
  3. Step 3: Cross multiply
    772,366.17x = 1,065,899.03 × 428,180.21
  4. Step 4: Simplify right side
    772,366.17x = 456,396,877,428.88
  5. Step 5: Solve for x
    x = 456,396,877,428.88/772,366.17
  6. Step 6: Final answer
    x = 590,907.39

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Double scale
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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.