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Finding the Fourth Proportional to 612,718.32, 845,206.15 and 367,639.69

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Solution

The fourth proportional to 612,718.32, 845,206.15 and 367,639.69 is: 507,135.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,718.32 : 845,206.15 = 367,639.69 : x
  2. Step 2: Convert to fraction form
    612,718.32/845,206.15 = 367,639.69/x
  3. Step 3: Cross multiply
    612,718.32x = 845,206.15 × 367,639.69
  4. Step 4: Simplify right side
    612,718.32x = 310,731,324,870.91
  5. Step 5: Solve for x
    x = 310,731,324,870.91/612,718.32
  6. Step 6: Final answer
    x = 507,135.68

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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.