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Finding the Fourth Proportional to 643,483.80, 965,225.70 and 475,522.20

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Solution

The fourth proportional to 643,483.80, 965,225.70 and 475,522.20 is: 713,283.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,483.80 : 965,225.70 = 475,522.20 : x
  2. Step 2: Convert to fraction form
    643,483.80/965,225.70 = 475,522.20/x
  3. Step 3: Cross multiply
    643,483.80x = 965,225.70 × 475,522.20
  4. Step 4: Simplify right side
    643,483.80x = 458,986,248,360.54
  5. Step 5: Solve for x
    x = 458,986,248,360.54/643,483.80
  6. Step 6: Final answer
    x = 713,283.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.