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Finding the Fourth Proportional to 648,143.56, 894,304.58 and 372,448.16

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Solution

The fourth proportional to 648,143.56, 894,304.58 and 372,448.16 is: 513,901.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,143.56 : 894,304.58 = 372,448.16 : x
  2. Step 2: Convert to fraction form
    648,143.56/894,304.58 = 372,448.16/x
  3. Step 3: Cross multiply
    648,143.56x = 894,304.58 × 372,448.16
  4. Step 4: Simplify right side
    648,143.56x = 333,082,094,415.47
  5. Step 5: Solve for x
    x = 333,082,094,415.47/648,143.56
  6. Step 6: Final answer
    x = 513,901.73

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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.