Home / 1,179,936,539.60-1,769,904,809.40-812,604,520.40

Finding the Fourth Proportional to 1,179,936,539.60, 1,769,904,809.40 and 812,604,520.40

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Solution

The fourth proportional to 1,179,936,539.60, 1,769,904,809.40 and 812,604,520.40 is: 1,218,906,780.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179,936,539.60 : 1,769,904,809.40 = 812,604,520.40 : x
  2. Step 2: Convert to fraction form
    1,179,936,539.60/1,769,904,809.40 = 812,604,520.40/x
  3. Step 3: Cross multiply
    1,179,936,539.60x = 1,769,904,809.40 × 812,604,520.40
  4. Step 4: Simplify right side
    1,179,936,539.60x = 1,438,232,648,796,140,544
  5. Step 5: Solve for x
    x = 1,438,232,648,796,140,544/1,179,936,539.60
  6. Step 6: Final answer
    x = 1,218,906,780.60

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Double scale
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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.