Home / 1,257,355,278.20-1,886,032,917.30-645,135,246.20

Finding the Fourth Proportional to 1,257,355,278.20, 1,886,032,917.30 and 645,135,246.20

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Solution

The fourth proportional to 1,257,355,278.20, 1,886,032,917.30 and 645,135,246.20 is: 967,702,869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257,355,278.20 : 1,886,032,917.30 = 645,135,246.20 : x
  2. Step 2: Convert to fraction form
    1,257,355,278.20/1,886,032,917.30 = 645,135,246.20/x
  3. Step 3: Cross multiply
    1,257,355,278.20x = 1,886,032,917.30 × 645,135,246.20
  4. Step 4: Simplify right side
    1,257,355,278.20x = 1,216,746,310,443,639,808
  5. Step 5: Solve for x
    x = 1,216,746,310,443,639,808/1,257,355,278.20
  6. Step 6: Final answer
    x = 967,702,869.30

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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.