Home / 769,857,657.60-1,154,786,486.40-640,611,206.40

Finding the Fourth Proportional to 769,857,657.60, 1,154,786,486.40 and 640,611,206.40

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Solution

The fourth proportional to 769,857,657.60, 1,154,786,486.40 and 640,611,206.40 is: 960,916,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,857,657.60 : 1,154,786,486.40 = 640,611,206.40 : x
  2. Step 2: Convert to fraction form
    769,857,657.60/1,154,786,486.40 = 640,611,206.40/x
  3. Step 3: Cross multiply
    769,857,657.60x = 1,154,786,486.40 × 640,611,206.40
  4. Step 4: Simplify right side
    769,857,657.60x = 739,769,164,187,121,280
  5. Step 5: Solve for x
    x = 739,769,164,187,121,280/769,857,657.60
  6. Step 6: Final answer
    x = 960,916,809.60

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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.