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Finding the Fourth Proportional to 628,220.48, 866,946.84 and 341,742.20

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Solution

The fourth proportional to 628,220.48, 866,946.84 and 341,742.20 is: 471,605.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,220.48 : 866,946.84 = 341,742.20 : x
  2. Step 2: Convert to fraction form
    628,220.48/866,946.84 = 341,742.20/x
  3. Step 3: Cross multiply
    628,220.48x = 866,946.84 × 341,742.20
  4. Step 4: Simplify right side
    628,220.48x = 296,272,320,384.65
  5. Step 5: Solve for x
    x = 296,272,320,384.65/628,220.48
  6. Step 6: Final answer
    x = 471,605.64

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Double scale
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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.