Home / 873,138,011.80-1,309,888,976.10-291,053,090.20

Finding the Fourth Proportional to 873,138,011.80, 1,309,888,976.10 and 291,053,090.20

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Solution

The fourth proportional to 873,138,011.80, 1,309,888,976.10 and 291,053,090.20 is: 436,640,289.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,138,011.80 : 1,309,888,976.10 = 291,053,090.20 : x
  2. Step 2: Convert to fraction form
    873,138,011.80/1,309,888,976.10 = 291,053,090.20/x
  3. Step 3: Cross multiply
    873,138,011.80x = 1,309,888,976.10 × 291,053,090.20
  4. Step 4: Simplify right side
    873,138,011.80x = 381,247,234,312,818,880
  5. Step 5: Solve for x
    x = 381,247,234,312,818,880/873,138,011.80
  6. Step 6: Final answer
    x = 436,640,289.58

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Double scale
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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.