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Finding the Fourth Proportional to 666,907.17, 920,331.75 and 360,983.49

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Solution

The fourth proportional to 666,907.17, 920,331.75 and 360,983.49 is: 498,157.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,907.17 : 920,331.75 = 360,983.49 : x
  2. Step 2: Convert to fraction form
    666,907.17/920,331.75 = 360,983.49/x
  3. Step 3: Cross multiply
    666,907.17x = 920,331.75 × 360,983.49
  4. Step 4: Simplify right side
    666,907.17x = 332,224,567,072.81
  5. Step 5: Solve for x
    x = 332,224,567,072.81/666,907.17
  6. Step 6: Final answer
    x = 498,157.14

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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.