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Finding the Fourth Proportional to 660,069.96, 910,872.18 and 358,257.48

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Solution

The fourth proportional to 660,069.96, 910,872.18 and 358,257.48 is: 494,382.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,069.96 : 910,872.18 = 358,257.48 : x
  2. Step 2: Convert to fraction form
    660,069.96/910,872.18 = 358,257.48/x
  3. Step 3: Cross multiply
    660,069.96x = 910,872.18 × 358,257.48
  4. Step 4: Simplify right side
    660,069.96x = 326,326,771,808.91
  5. Step 5: Solve for x
    x = 326,326,771,808.91/660,069.96
  6. Step 6: Final answer
    x = 494,382.10

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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.