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Finding the Fourth Proportional to 547,608.78, 755,417.07 and 346,521.42

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Solution

The fourth proportional to 547,608.78, 755,417.07 and 346,521.42 is: 478,020.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,608.78 : 755,417.07 = 346,521.42 : x
  2. Step 2: Convert to fraction form
    547,608.78/755,417.07 = 346,521.42/x
  3. Step 3: Cross multiply
    547,608.78x = 755,417.07 × 346,521.42
  4. Step 4: Simplify right side
    547,608.78x = 261,768,195,788.64
  5. Step 5: Solve for x
    x = 261,768,195,788.64/547,608.78
  6. Step 6: Final answer
    x = 478,020.45

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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.