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Finding the Fourth Proportional to 649,211.40, 973,817.10 and 491,747.40

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Solution

The fourth proportional to 649,211.40, 973,817.10 and 491,747.40 is: 737,621.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,211.40 : 973,817.10 = 491,747.40 : x
  2. Step 2: Convert to fraction form
    649,211.40/973,817.10 = 491,747.40/x
  3. Step 3: Cross multiply
    649,211.40x = 973,817.10 × 491,747.40
  4. Step 4: Simplify right side
    649,211.40x = 478,872,027,000.54
  5. Step 5: Solve for x
    x = 478,872,027,000.54/649,211.40
  6. Step 6: Final answer
    x = 737,621.10

Related Problems

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Half scale
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Double scale
Find fourth proportional to 649,212.40, 973,818.60 and 491,748.40
Similar ratio
Find fourth proportional to 973,817.10, 1,460,725.65 and 737,621.10
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.