Home / 638,801,615.40-958,202,423.10-275,295,971.40

Finding the Fourth Proportional to 638,801,615.40, 958,202,423.10 and 275,295,971.40

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Solution

The fourth proportional to 638,801,615.40, 958,202,423.10 and 275,295,971.40 is: 412,943,957.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,801,615.40 : 958,202,423.10 = 275,295,971.40 : x
  2. Step 2: Convert to fraction form
    638,801,615.40/958,202,423.10 = 275,295,971.40/x
  3. Step 3: Cross multiply
    638,801,615.40x = 958,202,423.10 × 275,295,971.40
  4. Step 4: Simplify right side
    638,801,615.40x = 263,789,266,865,148,288
  5. Step 5: Solve for x
    x = 263,789,266,865,148,288/638,801,615.40
  6. Step 6: Final answer
    x = 412,943,957.10

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Double scale
Find fourth proportional to 638,801,616.40, 958,202,424.60 and 275,295,972.40
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.