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Finding the Fourth Proportional to 557,115.70, 835,673.55 and 521,686.30

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Solution

The fourth proportional to 557,115.70, 835,673.55 and 521,686.30 is: 782,529.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,115.70 : 835,673.55 = 521,686.30 : x
  2. Step 2: Convert to fraction form
    557,115.70/835,673.55 = 521,686.30/x
  3. Step 3: Cross multiply
    557,115.70x = 835,673.55 × 521,686.30
  4. Step 4: Simplify right side
    557,115.70x = 435,959,442,307.37
  5. Step 5: Solve for x
    x = 435,959,442,307.37/557,115.70
  6. Step 6: Final answer
    x = 782,529.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.