Home / 663,240.51-914,621.64-421,102.71

Finding the Fourth Proportional to 663,240.51, 914,621.64 and 421,102.71

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Solution

The fourth proportional to 663,240.51, 914,621.64 and 421,102.71 is: 580,708.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,240.51 : 914,621.64 = 421,102.71 : x
  2. Step 2: Convert to fraction form
    663,240.51/914,621.64 = 421,102.71/x
  3. Step 3: Cross multiply
    663,240.51x = 914,621.64 × 421,102.71
  4. Step 4: Simplify right side
    663,240.51x = 385,149,651,228.64
  5. Step 5: Solve for x
    x = 385,149,651,228.64/663,240.51
  6. Step 6: Final answer
    x = 580,708.88

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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.