Home / 644,774.28-889,788.96-358,321.08

Finding the Fourth Proportional to 644,774.28, 889,788.96 and 358,321.08

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Solution

The fourth proportional to 644,774.28, 889,788.96 and 358,321.08 is: 494,483.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,774.28 : 889,788.96 = 358,321.08 : x
  2. Step 2: Convert to fraction form
    644,774.28/889,788.96 = 358,321.08/x
  3. Step 3: Cross multiply
    644,774.28x = 889,788.96 × 358,321.08
  4. Step 4: Simplify right side
    644,774.28x = 318,830,141,119.28
  5. Step 5: Solve for x
    x = 318,830,141,119.28/644,774.28
  6. Step 6: Final answer
    x = 494,483.34

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1.5x scale

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.