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Finding the Fourth Proportional to 612,720.32, 845,208.92 and 367,641.68

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Solution

The fourth proportional to 612,720.32, 845,208.92 and 367,641.68 is: 507,138.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,720.32 : 845,208.92 = 367,641.68 : x
  2. Step 2: Convert to fraction form
    612,720.32/845,208.92 = 367,641.68/x
  3. Step 3: Cross multiply
    612,720.32x = 845,208.92 × 367,641.68
  4. Step 4: Simplify right side
    612,720.32x = 310,734,025,461.58
  5. Step 5: Solve for x
    x = 310,734,025,461.58/612,720.32
  6. Step 6: Final answer
    x = 507,138.44

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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.