Home / 644,276.38-889,113.45-357,823.30

Finding the Fourth Proportional to 644,276.38, 889,113.45 and 357,823.30

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Solution

The fourth proportional to 644,276.38, 889,113.45 and 357,823.30 is: 493,802.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,276.38 : 889,113.45 = 357,823.30 : x
  2. Step 2: Convert to fraction form
    644,276.38/889,113.45 = 357,823.30/x
  3. Step 3: Cross multiply
    644,276.38x = 889,113.45 × 357,823.30
  4. Step 4: Simplify right side
    644,276.38x = 318,145,508,753.39
  5. Step 5: Solve for x
    x = 318,145,508,753.39/644,276.38
  6. Step 6: Final answer
    x = 493,802.84

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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.