Home / 1,280,356,219.72-1,766,893,376.10-693,645,355.72

Finding the Fourth Proportional to 1,280,356,219.72, 1,766,893,376.10 and 693,645,355.72

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Solution

The fourth proportional to 1,280,356,219.72, 1,766,893,376.10 and 693,645,355.72 is: 957,231,562.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,356,219.72 : 1,766,893,376.10 = 693,645,355.72 : x
  2. Step 2: Convert to fraction form
    1,280,356,219.72/1,766,893,376.10 = 693,645,355.72/x
  3. Step 3: Cross multiply
    1,280,356,219.72x = 1,766,893,376.10 × 693,645,355.72
  4. Step 4: Simplify right side
    1,280,356,219.72x = 1,225,597,384,384,196,352
  5. Step 5: Solve for x
    x = 1,225,597,384,384,196,352/1,280,356,219.72
  6. Step 6: Final answer
    x = 957,231,562.21

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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.