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Finding the Fourth Proportional to 694,429.84, 957,995.40 and 407,944.72

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Solution

The fourth proportional to 694,429.84, 957,995.40 and 407,944.72 is: 562,777.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,429.84 : 957,995.40 = 407,944.72 : x
  2. Step 2: Convert to fraction form
    694,429.84/957,995.40 = 407,944.72/x
  3. Step 3: Cross multiply
    694,429.84x = 957,995.40 × 407,944.72
  4. Step 4: Simplify right side
    694,429.84x = 390,809,165,214.29
  5. Step 5: Solve for x
    x = 390,809,165,214.29/694,429.84
  6. Step 6: Final answer
    x = 562,777.03

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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.