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Finding the Fourth Proportional to 666,690.49, 920,025.87 and 360,760.19

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Solution

The fourth proportional to 666,690.49, 920,025.87 and 360,760.19 is: 497,845.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,690.49 : 920,025.87 = 360,760.19 : x
  2. Step 2: Convert to fraction form
    666,690.49/920,025.87 = 360,760.19/x
  3. Step 3: Cross multiply
    666,690.49x = 920,025.87 × 360,760.19
  4. Step 4: Simplify right side
    666,690.49x = 331,908,707,666.12
  5. Step 5: Solve for x
    x = 331,908,707,666.12/666,690.49
  6. Step 6: Final answer
    x = 497,845.27

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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.