Home / 663,241.51-914,623.02-421,103.71

Finding the Fourth Proportional to 663,241.51, 914,623.02 and 421,103.71

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Solution

The fourth proportional to 663,241.51, 914,623.02 and 421,103.71 is: 580,710.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,241.51 : 914,623.02 = 421,103.71 : x
  2. Step 2: Convert to fraction form
    663,241.51/914,623.02 = 421,103.71/x
  3. Step 3: Cross multiply
    663,241.51x = 914,623.02 × 421,103.71
  4. Step 4: Simplify right side
    663,241.51x = 385,151,146,973.40
  5. Step 5: Solve for x
    x = 385,151,146,973.40/663,241.51
  6. Step 6: Final answer
    x = 580,710.26

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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.