Home / 644,392.13-889,261.20-357,938.87

Finding the Fourth Proportional to 644,392.13, 889,261.20 and 357,938.87

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Solution

The fourth proportional to 644,392.13, 889,261.20 and 357,938.87 is: 493,955.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,392.13 : 889,261.20 = 357,938.87 : x
  2. Step 2: Convert to fraction form
    644,392.13/889,261.20 = 357,938.87/x
  3. Step 3: Cross multiply
    644,392.13x = 889,261.20 × 357,938.87
  4. Step 4: Simplify right side
    644,392.13x = 318,301,144,616.54
  5. Step 5: Solve for x
    x = 318,301,144,616.54/644,392.13
  6. Step 6: Final answer
    x = 493,955.67

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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.