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Finding the Fourth Proportional to 666,680.07, 920,020.94 and 360,756.45

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Solution

The fourth proportional to 666,680.07, 920,020.94 and 360,756.45 is: 497,845.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,680.07 : 920,020.94 = 360,756.45 : x
  2. Step 2: Convert to fraction form
    666,680.07/920,020.94 = 360,756.45/x
  3. Step 3: Cross multiply
    666,680.07x = 920,020.94 × 360,756.45
  4. Step 4: Simplify right side
    666,680.07x = 331,903,486,436.28
  5. Step 5: Solve for x
    x = 331,903,486,436.28/666,680.07
  6. Step 6: Final answer
    x = 497,845.22

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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.