Home / 642,945.76-964,442.10-243,616.28

Finding the Fourth Proportional to 642,945.76, 964,442.10 and 243,616.28

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Solution

The fourth proportional to 642,945.76, 964,442.10 and 243,616.28 is: 365,433.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,945.76 : 964,442.10 = 243,616.28 : x
  2. Step 2: Convert to fraction form
    642,945.76/964,442.10 = 243,616.28/x
  3. Step 3: Cross multiply
    642,945.76x = 964,442.10 × 243,616.28
  4. Step 4: Simplify right side
    642,945.76x = 234,953,796,677.39
  5. Step 5: Solve for x
    x = 234,953,796,677.39/642,945.76
  6. Step 6: Final answer
    x = 365,433.31

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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.