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Finding the Fourth Proportional to 612,428.90, 845,199.15 and 367,422.83

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Solution

The fourth proportional to 612,428.90, 845,199.15 and 367,422.83 is: 507,071.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,428.90 : 845,199.15 = 367,422.83 : x
  2. Step 2: Convert to fraction form
    612,428.90/845,199.15 = 367,422.83/x
  3. Step 3: Cross multiply
    612,428.90x = 845,199.15 × 367,422.83
  4. Step 4: Simplify right side
    612,428.90x = 310,545,463,606.60
  5. Step 5: Solve for x
    x = 310,545,463,606.60/612,428.90
  6. Step 6: Final answer
    x = 507,071.86

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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.