Home / 651,426.40-977,139.60-277,487.20

Finding the Fourth Proportional to 651,426.40, 977,139.60 and 277,487.20

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Solution

The fourth proportional to 651,426.40, 977,139.60 and 277,487.20 is: 416,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,426.40 : 977,139.60 = 277,487.20 : x
  2. Step 2: Convert to fraction form
    651,426.40/977,139.60 = 277,487.20/x
  3. Step 3: Cross multiply
    651,426.40x = 977,139.60 × 277,487.20
  4. Step 4: Simplify right side
    651,426.40x = 271,143,731,613.12
  5. Step 5: Solve for x
    x = 271,143,731,613.12/651,426.40
  6. Step 6: Final answer
    x = 416,230.80

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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.