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Finding the Fourth Proportional to 631,929.77, 872,068.91 and 359,993.64

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Solution

The fourth proportional to 631,929.77, 872,068.91 and 359,993.64 is: 496,794.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,929.77 : 872,068.91 = 359,993.64 : x
  2. Step 2: Convert to fraction form
    631,929.77/872,068.91 = 359,993.64/x
  3. Step 3: Cross multiply
    631,929.77x = 872,068.91 × 359,993.64
  4. Step 4: Simplify right side
    631,929.77x = 313,939,259,441.76
  5. Step 5: Solve for x
    x = 313,939,259,441.76/631,929.77
  6. Step 6: Final answer
    x = 496,794.54

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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.