Home / 853,111.64-1,280,454.68-432,682.76

Finding the Fourth Proportional to 853,111.64, 1,280,454.68 and 432,682.76

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Solution

The fourth proportional to 853,111.64, 1,280,454.68 and 432,682.76 is: 649,423.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,111.64 : 1,280,454.68 = 432,682.76 : x
  2. Step 2: Convert to fraction form
    853,111.64/1,280,454.68 = 432,682.76/x
  3. Step 3: Cross multiply
    853,111.64x = 1,280,454.68 × 432,682.76
  4. Step 4: Simplify right side
    853,111.64x = 554,030,664,997.32
  5. Step 5: Solve for x
    x = 554,030,664,997.32/853,111.64
  6. Step 6: Final answer
    x = 649,423.40

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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.