Home / 677,626.29-935,153.60-405,641.55

Finding the Fourth Proportional to 677,626.29, 935,153.60 and 405,641.55

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Solution

The fourth proportional to 677,626.29, 935,153.60 and 405,641.55 is: 559,802.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,626.29 : 935,153.60 = 405,641.55 : x
  2. Step 2: Convert to fraction form
    677,626.29/935,153.60 = 405,641.55/x
  3. Step 3: Cross multiply
    677,626.29x = 935,153.60 × 405,641.55
  4. Step 4: Simplify right side
    677,626.29x = 379,337,156,453.97
  5. Step 5: Solve for x
    x = 379,337,156,453.97/677,626.29
  6. Step 6: Final answer
    x = 559,802.89

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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.