Home / 642,643.64-963,743.51-263,456.72

Finding the Fourth Proportional to 642,643.64, 963,743.51 and 263,456.72

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Solution

The fourth proportional to 642,643.64, 963,743.51 and 263,456.72 is: 395,094.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,643.64 : 963,743.51 = 263,456.72 : x
  2. Step 2: Convert to fraction form
    642,643.64/963,743.51 = 263,456.72/x
  3. Step 3: Cross multiply
    642,643.64x = 963,743.51 × 263,456.72
  4. Step 4: Simplify right side
    642,643.64x = 253,904,697,929.89
  5. Step 5: Solve for x
    x = 253,904,697,929.89/642,643.64
  6. Step 6: Final answer
    x = 395,094.08

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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.