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Finding the Fourth Proportional to 734,878.79, 1,101,889.13 and 285,074.04

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Solution

The fourth proportional to 734,878.79, 1,101,889.13 and 285,074.04 is: 427,444.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    734,878.79 : 1,101,889.13 = 285,074.04 : x
  2. Step 2: Convert to fraction form
    734,878.79/1,101,889.13 = 285,074.04/x
  3. Step 3: Cross multiply
    734,878.79x = 1,101,889.13 × 285,074.04
  4. Step 4: Simplify right side
    734,878.79x = 314,119,985,921.19
  5. Step 5: Solve for x
    x = 314,119,985,921.19/734,878.79
  6. Step 6: Final answer
    x = 427,444.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.