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Finding the Fourth Proportional to 480,636.68, 663,416.67 and 317,412.36

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Solution

The fourth proportional to 480,636.68, 663,416.67 and 317,412.36 is: 438,120.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,636.68 : 663,416.67 = 317,412.36 : x
  2. Step 2: Convert to fraction form
    480,636.68/663,416.67 = 317,412.36/x
  3. Step 3: Cross multiply
    480,636.68x = 663,416.67 × 317,412.36
  4. Step 4: Simplify right side
    480,636.68x = 210,576,650,888.04
  5. Step 5: Solve for x
    x = 210,576,650,888.04/480,636.68
  6. Step 6: Final answer
    x = 438,120.23

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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.