Home / 651,426.60-977,139.90-438,850.20

Finding the Fourth Proportional to 651,426.60, 977,139.90 and 438,850.20

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Solution

The fourth proportional to 651,426.60, 977,139.90 and 438,850.20 is: 658,275.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,426.60 : 977,139.90 = 438,850.20 : x
  2. Step 2: Convert to fraction form
    651,426.60/977,139.90 = 438,850.20/x
  3. Step 3: Cross multiply
    651,426.60x = 977,139.90 × 438,850.20
  4. Step 4: Simplify right side
    651,426.60x = 428,818,040,542.98
  5. Step 5: Solve for x
    x = 428,818,040,542.98/651,426.60
  6. Step 6: Final answer
    x = 658,275.30

Related Problems

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Half scale
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Double scale
Find fourth proportional to 651,427.60, 977,141.40 and 438,851.20
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.