Home / 818,970.11-1,228,630.12-286,508.51

Finding the Fourth Proportional to 818,970.11, 1,228,630.12 and 286,508.51

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Solution

The fourth proportional to 818,970.11, 1,228,630.12 and 286,508.51 is: 429,823.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,970.11 : 1,228,630.12 = 286,508.51 : x
  2. Step 2: Convert to fraction form
    818,970.11/1,228,630.12 = 286,508.51/x
  3. Step 3: Cross multiply
    818,970.11x = 1,228,630.12 × 286,508.51
  4. Step 4: Simplify right side
    818,970.11x = 352,012,984,381.87
  5. Step 5: Solve for x
    x = 352,012,984,381.87/818,970.11
  6. Step 6: Final answer
    x = 429,823.97

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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.