Home / 1,212,624,143.40-1,818,936,215.10-661,626,114.60

Finding the Fourth Proportional to 1,212,624,143.40, 1,818,936,215.10 and 661,626,114.60

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Solution

The fourth proportional to 1,212,624,143.40, 1,818,936,215.10 and 661,626,114.60 is: 992,439,171.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,624,143.40 : 1,818,936,215.10 = 661,626,114.60 : x
  2. Step 2: Convert to fraction form
    1,212,624,143.40/1,818,936,215.10 = 661,626,114.60/x
  3. Step 3: Cross multiply
    1,212,624,143.40x = 1,818,936,215.10 × 661,626,114.60
  4. Step 4: Simplify right side
    1,212,624,143.40x = 1,203,455,700,701,842,944
  5. Step 5: Solve for x
    x = 1,203,455,700,701,842,944/1,212,624,143.40
  6. Step 6: Final answer
    x = 992,439,171.90

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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.