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Finding the Fourth Proportional to 875,136.56, 1,207,688.49 and 472,728.56

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Solution

The fourth proportional to 875,136.56, 1,207,688.49 and 472,728.56 is: 652,365.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,136.56 : 1,207,688.49 = 472,728.56 : x
  2. Step 2: Convert to fraction form
    875,136.56/1,207,688.49 = 472,728.56/x
  3. Step 3: Cross multiply
    875,136.56x = 1,207,688.49 × 472,728.56
  4. Step 4: Simplify right side
    875,136.56x = 570,908,843,825.50
  5. Step 5: Solve for x
    x = 570,908,843,825.50/875,136.56
  6. Step 6: Final answer
    x = 652,365.43

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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.