Home / 463,343.10-639,405.30-256,607.19

Finding the Fourth Proportional to 463,343.10, 639,405.30 and 256,607.19

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Solution

The fourth proportional to 463,343.10, 639,405.30 and 256,607.19 is: 354,113.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,343.10 : 639,405.30 = 256,607.19 : x
  2. Step 2: Convert to fraction form
    463,343.10/639,405.30 = 256,607.19/x
  3. Step 3: Cross multiply
    463,343.10x = 639,405.30 × 256,607.19
  4. Step 4: Simplify right side
    463,343.10x = 164,075,997,304.11
  5. Step 5: Solve for x
    x = 164,075,997,304.11/463,343.10
  6. Step 6: Final answer
    x = 354,113.39

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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.