Home / 859,515.18-1,289,272.77-326,913.18

Finding the Fourth Proportional to 859,515.18, 1,289,272.77 and 326,913.18

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Solution

The fourth proportional to 859,515.18, 1,289,272.77 and 326,913.18 is: 490,369.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,515.18 : 1,289,272.77 = 326,913.18 : x
  2. Step 2: Convert to fraction form
    859,515.18/1,289,272.77 = 326,913.18/x
  3. Step 3: Cross multiply
    859,515.18x = 1,289,272.77 × 326,913.18
  4. Step 4: Simplify right side
    859,515.18x = 421,480,261,128.11
  5. Step 5: Solve for x
    x = 421,480,261,128.11/859,515.18
  6. Step 6: Final answer
    x = 490,369.77

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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.