Home / 858,671.10-1,288,646.55-327,230.10

Finding the Fourth Proportional to 858,671.10, 1,288,646.55 and 327,230.10

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Solution

The fourth proportional to 858,671.10, 1,288,646.55 and 327,230.10 is: 491,089.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,671.10 : 1,288,646.55 = 327,230.10 : x
  2. Step 2: Convert to fraction form
    858,671.10/1,288,646.55 = 327,230.10/x
  3. Step 3: Cross multiply
    858,671.10x = 1,288,646.55 × 327,230.10
  4. Step 4: Simplify right side
    858,671.10x = 421,683,939,421.16
  5. Step 5: Solve for x
    x = 421,683,939,421.16/858,671.10
  6. Step 6: Final answer
    x = 491,089.01

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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.