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Finding the Fourth Proportional to 666,706.56, 920,047.92 and 360,776.22

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Solution

The fourth proportional to 666,706.56, 920,047.92 and 360,776.22 is: 497,867.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,706.56 : 920,047.92 = 360,776.22 : x
  2. Step 2: Convert to fraction form
    666,706.56/920,047.92 = 360,776.22/x
  3. Step 3: Cross multiply
    666,706.56x = 920,047.92 × 360,776.22
  4. Step 4: Simplify right side
    666,706.56x = 331,931,410,796.46
  5. Step 5: Solve for x
    x = 331,931,410,796.46/666,706.56
  6. Step 6: Final answer
    x = 497,867.32

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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.