Home / 1,238,829,891.39-1,709,630,357.07-674,287,486.42

Finding the Fourth Proportional to 1,238,829,891.39, 1,709,630,357.07 and 674,287,486.42

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Solution

The fourth proportional to 1,238,829,891.39, 1,709,630,357.07 and 674,287,486.42 is: 930,541,282.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,829,891.39 : 1,709,630,357.07 = 674,287,486.42 : x
  2. Step 2: Convert to fraction form
    1,238,829,891.39/1,709,630,357.07 = 674,287,486.42/x
  3. Step 3: Cross multiply
    1,238,829,891.39x = 1,709,630,357.07 × 674,287,486.42
  4. Step 4: Simplify right side
    1,238,829,891.39x = 1,152,782,356,173,783,680
  5. Step 5: Solve for x
    x = 1,152,782,356,173,783,680/1,238,829,891.39
  6. Step 6: Final answer
    x = 930,541,282.69

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.