Home / 525,839.40-788,759.10-442,895.40

Finding the Fourth Proportional to 525,839.40, 788,759.10 and 442,895.40

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Solution

The fourth proportional to 525,839.40, 788,759.10 and 442,895.40 is: 664,343.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,839.40 : 788,759.10 = 442,895.40 : x
  2. Step 2: Convert to fraction form
    525,839.40/788,759.10 = 442,895.40/x
  3. Step 3: Cross multiply
    525,839.40x = 788,759.10 × 442,895.40
  4. Step 4: Simplify right side
    525,839.40x = 349,337,777,098.14
  5. Step 5: Solve for x
    x = 349,337,777,098.14/525,839.40
  6. Step 6: Final answer
    x = 664,343.10

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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.