Home / 1,276,009,657.20-1,913,258,658.60-663,789,625.20

Finding the Fourth Proportional to 1,276,009,657.20, 1,913,258,658.60 and 663,789,625.20

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Solution

The fourth proportional to 1,276,009,657.20, 1,913,258,658.60 and 663,789,625.20 is: 995,291,250.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,009,657.20 : 1,913,258,658.60 = 663,789,625.20 : x
  2. Step 2: Convert to fraction form
    1,276,009,657.20/1,913,258,658.60 = 663,789,625.20/x
  3. Step 3: Cross multiply
    1,276,009,657.20x = 1,913,258,658.60 × 663,789,625.20
  4. Step 4: Simplify right side
    1,276,009,657.20x = 1,270,001,247,902,748,672
  5. Step 5: Solve for x
    x = 1,270,001,247,902,748,672/1,276,009,657.20
  6. Step 6: Final answer
    x = 995,291,250.92

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Double scale
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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.