Home / 716,172.06-988,344.63-393,897.18

Finding the Fourth Proportional to 716,172.06, 988,344.63 and 393,897.18

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Solution

The fourth proportional to 716,172.06, 988,344.63 and 393,897.18 is: 543,593.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,172.06 : 988,344.63 = 393,897.18 : x
  2. Step 2: Convert to fraction form
    716,172.06/988,344.63 = 393,897.18/x
  3. Step 3: Cross multiply
    716,172.06x = 988,344.63 × 393,897.18
  4. Step 4: Simplify right side
    716,172.06x = 389,306,162,625.14
  5. Step 5: Solve for x
    x = 389,306,162,625.14/716,172.06
  6. Step 6: Final answer
    x = 543,593.06

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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.