Home / 1,188,899,257.92-1,640,718,507.30-712,432,590.90

Finding the Fourth Proportional to 1,188,899,257.92, 1,640,718,507.30 and 712,432,590.90

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Solution

The fourth proportional to 1,188,899,257.92, 1,640,718,507.30 and 712,432,590.90 is: 983,179,465.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,899,257.92 : 1,640,718,507.30 = 712,432,590.90 : x
  2. Step 2: Convert to fraction form
    1,188,899,257.92/1,640,718,507.30 = 712,432,590.90/x
  3. Step 3: Cross multiply
    1,188,899,257.92x = 1,640,718,507.30 × 712,432,590.90
  4. Step 4: Simplify right side
    1,188,899,257.92x = 1,168,901,337,091,754,496
  5. Step 5: Solve for x
    x = 1,168,901,337,091,754,496/1,188,899,257.92
  6. Step 6: Final answer
    x = 983,179,465.63

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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.