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Finding the Fourth Proportional to 718,547.94, 991,576.62 and 396,252.18

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Solution

The fourth proportional to 718,547.94, 991,576.62 and 396,252.18 is: 546,817.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,547.94 : 991,576.62 = 396,252.18 : x
  2. Step 2: Convert to fraction form
    718,547.94/991,576.62 = 396,252.18/x
  3. Step 3: Cross multiply
    718,547.94x = 991,576.62 × 396,252.18
  4. Step 4: Simplify right side
    718,547.94x = 392,914,397,312.03
  5. Step 5: Solve for x
    x = 392,914,397,312.03/718,547.94
  6. Step 6: Final answer
    x = 546,817.23

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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.