Home / 642,569.36-886,735.32-356,088.56

Finding the Fourth Proportional to 642,569.36, 886,735.32 and 356,088.56

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Solution

The fourth proportional to 642,569.36, 886,735.32 and 356,088.56 is: 491,396.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,569.36 : 886,735.32 = 356,088.56 : x
  2. Step 2: Convert to fraction form
    642,569.36/886,735.32 = 356,088.56/x
  3. Step 3: Cross multiply
    642,569.36x = 886,735.32 × 356,088.56
  4. Step 4: Simplify right side
    642,569.36x = 315,756,303,199.94
  5. Step 5: Solve for x
    x = 315,756,303,199.94/642,569.36
  6. Step 6: Final answer
    x = 491,396.45

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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.