Home / 644,747.85-889,734.29-358,260.57

Finding the Fourth Proportional to 644,747.85, 889,734.29 and 358,260.57

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Solution

The fourth proportional to 644,747.85, 889,734.29 and 358,260.57 is: 494,389.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,747.85 : 889,734.29 = 358,260.57 : x
  2. Step 2: Convert to fraction form
    644,747.85/889,734.29 = 358,260.57/x
  3. Step 3: Cross multiply
    644,747.85x = 889,734.29 × 358,260.57
  4. Step 4: Simplify right side
    644,747.85x = 318,756,712,092.64
  5. Step 5: Solve for x
    x = 318,756,712,092.64/644,747.85
  6. Step 6: Final answer
    x = 494,389.72

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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.