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Finding the Fourth Proportional to 473,120.80, 709,681.20 and 449,792.80

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Solution

The fourth proportional to 473,120.80, 709,681.20 and 449,792.80 is: 674,689.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,120.80 : 709,681.20 = 449,792.80 : x
  2. Step 2: Convert to fraction form
    473,120.80/709,681.20 = 449,792.80/x
  3. Step 3: Cross multiply
    473,120.80x = 709,681.20 × 449,792.80
  4. Step 4: Simplify right side
    473,120.80x = 319,209,494,055.36
  5. Step 5: Solve for x
    x = 319,209,494,055.36/473,120.80
  6. Step 6: Final answer
    x = 674,689.20

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.