Home / 790,817.16-1,185,980.39-285,312.42

Finding the Fourth Proportional to 790,817.16, 1,185,980.39 and 285,312.42

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Solution

The fourth proportional to 790,817.16, 1,185,980.39 and 285,312.42 is: 427,880.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,817.16 : 1,185,980.39 = 285,312.42 : x
  2. Step 2: Convert to fraction form
    790,817.16/1,185,980.39 = 285,312.42/x
  3. Step 3: Cross multiply
    790,817.16x = 1,185,980.39 × 285,312.42
  4. Step 4: Simplify right side
    790,817.16x = 338,374,935,856.73
  5. Step 5: Solve for x
    x = 338,374,935,856.73/790,817.16
  6. Step 6: Final answer
    x = 427,880.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.