Home / 485,827,114,848.22-670,118,593,977.75-312,431,471,243.10

Finding the Fourth Proportional to 485,827,114,848.22, 670,118,593,977.75 and 312,431,471,243.10

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Solution

The fourth proportional to 485,827,114,848.22, 670,118,593,977.75 and 312,431,471,243.10 is: 430,947,824,493.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,827,114,848.22 : 670,118,593,977.75 = 312,431,471,243.10 : x
  2. Step 2: Convert to fraction form
    485,827,114,848.22/670,118,593,977.75 = 312,431,471,243.10/x
  3. Step 3: Cross multiply
    485,827,114,848.22x = 670,118,593,977.75 × 312,431,471,243.10
  4. Step 4: Simplify right side
    485,827,114,848.22x = 209,366,138,223,826,003,034,112
  5. Step 5: Solve for x
    x = 209,366,138,223,826,003,034,112/485,827,114,848.22
  6. Step 6: Final answer
    x = 430,947,824,493.57

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.