Home / 850,938.70-1,276,408.05-431,034.70

Finding the Fourth Proportional to 850,938.70, 1,276,408.05 and 431,034.70

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Solution

The fourth proportional to 850,938.70, 1,276,408.05 and 431,034.70 is: 646,552.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,938.70 : 1,276,408.05 = 431,034.70 : x
  2. Step 2: Convert to fraction form
    850,938.70/1,276,408.05 = 431,034.70/x
  3. Step 3: Cross multiply
    850,938.70x = 1,276,408.05 × 431,034.70
  4. Step 4: Simplify right side
    850,938.70x = 550,176,160,909.34
  5. Step 5: Solve for x
    x = 550,176,160,909.34/850,938.70
  6. Step 6: Final answer
    x = 646,552.05

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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.