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Finding the Fourth Proportional to 885,063.60, 1,221,072.78 and 522,306

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Solution

The fourth proportional to 885,063.60, 1,221,072.78 and 522,306 is: 720,596.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,063.60 : 1,221,072.78 = 522,306 : x
  2. Step 2: Convert to fraction form
    885,063.60/1,221,072.78 = 522,306/x
  3. Step 3: Cross multiply
    885,063.60x = 1,221,072.78 × 522,306
  4. Step 4: Simplify right side
    885,063.60x = 637,773,639,430.68
  5. Step 5: Solve for x
    x = 637,773,639,430.68/885,063.60
  6. Step 6: Final answer
    x = 720,596.39

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Similar ratio
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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.