Home / 851,255.80-1,276,235.70-430,833.40

Finding the Fourth Proportional to 851,255.80, 1,276,235.70 and 430,833.40

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Solution

The fourth proportional to 851,255.80, 1,276,235.70 and 430,833.40 is: 645,922.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,255.80 : 1,276,235.70 = 430,833.40 : x
  2. Step 2: Convert to fraction form
    851,255.80/1,276,235.70 = 430,833.40/x
  3. Step 3: Cross multiply
    851,255.80x = 1,276,235.70 × 430,833.40
  4. Step 4: Simplify right side
    851,255.80x = 549,844,965,832.38
  5. Step 5: Solve for x
    x = 549,844,965,832.38/851,255.80
  6. Step 6: Final answer
    x = 645,922.14

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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.