Home / 684,289,719.80-1,026,434,579.70-320,820,817.40

Finding the Fourth Proportional to 684,289,719.80, 1,026,434,579.70 and 320,820,817.40

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Solution

The fourth proportional to 684,289,719.80, 1,026,434,579.70 and 320,820,817.40 is: 481,231,226.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,289,719.80 : 1,026,434,579.70 = 320,820,817.40 : x
  2. Step 2: Convert to fraction form
    684,289,719.80/1,026,434,579.70 = 320,820,817.40/x
  3. Step 3: Cross multiply
    684,289,719.80x = 1,026,434,579.70 × 320,820,817.40
  4. Step 4: Simplify right side
    684,289,719.80x = 329,301,580,866,979,456
  5. Step 5: Solve for x
    x = 329,301,580,866,979,456/684,289,719.80
  6. Step 6: Final answer
    x = 481,231,226.10

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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.