Home / 1,238,216,694.60-1,858,142,257.08-656,359,547.68

Finding the Fourth Proportional to 1,238,216,694.60, 1,858,142,257.08 and 656,359,547.68

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Solution

The fourth proportional to 1,238,216,694.60, 1,858,142,257.08 and 656,359,547.68 is: 984,972,514.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,216,694.60 : 1,858,142,257.08 = 656,359,547.68 : x
  2. Step 2: Convert to fraction form
    1,238,216,694.60/1,858,142,257.08 = 656,359,547.68/x
  3. Step 3: Cross multiply
    1,238,216,694.60x = 1,858,142,257.08 × 656,359,547.68
  4. Step 4: Simplify right side
    1,238,216,694.60x = 1,219,609,411,382,123,008
  5. Step 5: Solve for x
    x = 1,219,609,411,382,123,008/1,238,216,694.60
  6. Step 6: Final answer
    x = 984,972,514.67

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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.