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Finding the Fourth Proportional to 612,719.32, 845,207.53 and 367,640.69

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Solution

The fourth proportional to 612,719.32, 845,207.53 and 367,640.69 is: 507,137.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,719.32 : 845,207.53 = 367,640.69 : x
  2. Step 2: Convert to fraction form
    612,719.32/845,207.53 = 367,640.69/x
  3. Step 3: Cross multiply
    612,719.32x = 845,207.53 × 367,640.69
  4. Step 4: Simplify right side
    612,719.32x = 310,732,679,522.40
  5. Step 5: Solve for x
    x = 310,732,679,522.40/612,719.32
  6. Step 6: Final answer
    x = 507,137.07

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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.