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Finding the Fourth Proportional to 740,678, 1,021,853.76 and 547,549.40

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Solution

The fourth proportional to 740,678, 1,021,853.76 and 547,549.40 is: 755,409.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,678 : 1,021,853.76 = 547,549.40 : x
  2. Step 2: Convert to fraction form
    740,678/1,021,853.76 = 547,549.40/x
  3. Step 3: Cross multiply
    740,678x = 1,021,853.76 × 547,549.40
  4. Step 4: Simplify right side
    740,678x = 559,515,413,175.74
  5. Step 5: Solve for x
    x = 559,515,413,175.74/740,678
  6. Step 6: Final answer
    x = 755,409.79

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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.