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Finding the Fourth Proportional to 651,806.20, 977,126.10 and 427,274.20

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Solution

The fourth proportional to 651,806.20, 977,126.10 and 427,274.20 is: 640,529.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,806.20 : 977,126.10 = 427,274.20 : x
  2. Step 2: Convert to fraction form
    651,806.20/977,126.10 = 427,274.20/x
  3. Step 3: Cross multiply
    651,806.20x = 977,126.10 × 427,274.20
  4. Step 4: Simplify right side
    651,806.20x = 417,500,772,676.62
  5. Step 5: Solve for x
    x = 417,500,772,676.62/651,806.20
  6. Step 6: Final answer
    x = 640,529.00

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Double scale
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Similar ratio
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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.