Home / 851,262.80-1,276,246.20-430,840.40

Finding the Fourth Proportional to 851,262.80, 1,276,246.20 and 430,840.40

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Solution

The fourth proportional to 851,262.80, 1,276,246.20 and 430,840.40 is: 645,932.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,262.80 : 1,276,246.20 = 430,840.40 : x
  2. Step 2: Convert to fraction form
    851,262.80/1,276,246.20 = 430,840.40/x
  3. Step 3: Cross multiply
    851,262.80x = 1,276,246.20 × 430,840.40
  4. Step 4: Simplify right side
    851,262.80x = 549,858,423,306.48
  5. Step 5: Solve for x
    x = 549,858,423,306.48/851,262.80
  6. Step 6: Final answer
    x = 645,932.63

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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.