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Finding the Fourth Proportional to 631,287.95, 870,050.77 and 477,958.76

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Solution

The fourth proportional to 631,287.95, 870,050.77 and 477,958.76 is: 658,730.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,287.95 : 870,050.77 = 477,958.76 : x
  2. Step 2: Convert to fraction form
    631,287.95/870,050.77 = 477,958.76/x
  3. Step 3: Cross multiply
    631,287.95x = 870,050.77 × 477,958.76
  4. Step 4: Simplify right side
    631,287.95x = 415,848,384,883.79
  5. Step 5: Solve for x
    x = 415,848,384,883.79/631,287.95
  6. Step 6: Final answer
    x = 658,730.12

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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.