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Finding the Fourth Proportional to 644,735.52, 889,717.34 and 358,248.24

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Solution

The fourth proportional to 644,735.52, 889,717.34 and 358,248.24 is: 494,372.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,735.52 : 889,717.34 = 358,248.24 : x
  2. Step 2: Convert to fraction form
    644,735.52/889,717.34 = 358,248.24/x
  3. Step 3: Cross multiply
    644,735.52x = 889,717.34 × 358,248.24
  4. Step 4: Simplify right side
    644,735.52x = 318,739,671,152.48
  5. Step 5: Solve for x
    x = 318,739,671,152.48/644,735.52
  6. Step 6: Final answer
    x = 494,372.75

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Double scale
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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.