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Finding the Fourth Proportional to 625,638.24, 864,093.12 and 424,084.32

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Solution

The fourth proportional to 625,638.24, 864,093.12 and 424,084.32 is: 585,719.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,638.24 : 864,093.12 = 424,084.32 : x
  2. Step 2: Convert to fraction form
    625,638.24/864,093.12 = 424,084.32/x
  3. Step 3: Cross multiply
    625,638.24x = 864,093.12 × 424,084.32
  4. Step 4: Simplify right side
    625,638.24x = 366,448,343,211.88
  5. Step 5: Solve for x
    x = 366,448,343,211.88/625,638.24
  6. Step 6: Final answer
    x = 585,719.22

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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.