Home / 1,280,356,240.72-1,766,893,405.08-693,645,376.72

Finding the Fourth Proportional to 1,280,356,240.72, 1,766,893,405.08 and 693,645,376.72

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Solution

The fourth proportional to 1,280,356,240.72, 1,766,893,405.08 and 693,645,376.72 is: 957,231,591.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,356,240.72 : 1,766,893,405.08 = 693,645,376.72 : x
  2. Step 2: Convert to fraction form
    1,280,356,240.72/1,766,893,405.08 = 693,645,376.72/x
  3. Step 3: Cross multiply
    1,280,356,240.72x = 1,766,893,405.08 × 693,645,376.72
  4. Step 4: Simplify right side
    1,280,356,240.72x = 1,225,597,441,590,800,128
  5. Step 5: Solve for x
    x = 1,225,597,441,590,800,128/1,280,356,240.72
  6. Step 6: Final answer
    x = 957,231,591.19

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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.