Home / 691,131.48-953,645.81-385,140.79

Finding the Fourth Proportional to 691,131.48, 953,645.81 and 385,140.79

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Solution

The fourth proportional to 691,131.48, 953,645.81 and 385,140.79 is: 531,429.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,131.48 : 953,645.81 = 385,140.79 : x
  2. Step 2: Convert to fraction form
    691,131.48/953,645.81 = 385,140.79/x
  3. Step 3: Cross multiply
    691,131.48x = 953,645.81 × 385,140.79
  4. Step 4: Simplify right side
    691,131.48x = 367,287,896,333.77
  5. Step 5: Solve for x
    x = 367,287,896,333.77/691,131.48
  6. Step 6: Final answer
    x = 531,429.85

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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.