Home / 1,260,784,911.30-1,891,177,366.95-442,897,212.30

Finding the Fourth Proportional to 1,260,784,911.30, 1,891,177,366.95 and 442,897,212.30

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Solution

The fourth proportional to 1,260,784,911.30, 1,891,177,366.95 and 442,897,212.30 is: 664,345,818.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,784,911.30 : 1,891,177,366.95 = 442,897,212.30 : x
  2. Step 2: Convert to fraction form
    1,260,784,911.30/1,891,177,366.95 = 442,897,212.30/x
  3. Step 3: Cross multiply
    1,260,784,911.30x = 1,891,177,366.95 × 442,897,212.30
  4. Step 4: Simplify right side
    1,260,784,911.30x = 837,597,183,787,009,152
  5. Step 5: Solve for x
    x = 837,597,183,787,009,152/1,260,784,911.30
  6. Step 6: Final answer
    x = 664,345,818.45

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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.