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Finding the Fourth Proportional to 876,000.70, 1,311,543.45 and 851,424.70

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Solution

The fourth proportional to 876,000.70, 1,311,543.45 and 851,424.70 is: 1,274,748.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,000.70 : 1,311,543.45 = 851,424.70 : x
  2. Step 2: Convert to fraction form
    876,000.70/1,311,543.45 = 851,424.70/x
  3. Step 3: Cross multiply
    876,000.70x = 1,311,543.45 × 851,424.70
  4. Step 4: Simplify right side
    876,000.70x = 1,116,680,488,453.21
  5. Step 5: Solve for x
    x = 1,116,680,488,453.21/876,000.70
  6. Step 6: Final answer
    x = 1,274,748.40

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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.