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Finding the Fourth Proportional to 561,277.90, 774,818.85 and 357,608.08

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Solution

The fourth proportional to 561,277.90, 774,818.85 and 357,608.08 is: 493,661.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,277.90 : 774,818.85 = 357,608.08 : x
  2. Step 2: Convert to fraction form
    561,277.90/774,818.85 = 357,608.08/x
  3. Step 3: Cross multiply
    561,277.90x = 774,818.85 × 357,608.08
  4. Step 4: Simplify right side
    561,277.90x = 277,081,481,296.31
  5. Step 5: Solve for x
    x = 277,081,481,296.31/561,277.90
  6. Step 6: Final answer
    x = 493,661.84

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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.