Home / 640,977,419.70-961,466,129.55-634,174,974.90

Finding the Fourth Proportional to 640,977,419.70, 961,466,129.55 and 634,174,974.90

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Solution

The fourth proportional to 640,977,419.70, 961,466,129.55 and 634,174,974.90 is: 951,262,462.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,977,419.70 : 961,466,129.55 = 634,174,974.90 : x
  2. Step 2: Convert to fraction form
    640,977,419.70/961,466,129.55 = 634,174,974.90/x
  3. Step 3: Cross multiply
    640,977,419.70x = 961,466,129.55 × 634,174,974.90
  4. Step 4: Simplify right side
    640,977,419.70x = 609,737,758,574,571,392
  5. Step 5: Solve for x
    x = 609,737,758,574,571,392/640,977,419.70
  6. Step 6: Final answer
    x = 951,262,462.35

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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.