Home / 426,894.84-640,319.04-216,527.28

Finding the Fourth Proportional to 426,894.84, 640,319.04 and 216,527.28

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Solution

The fourth proportional to 426,894.84, 640,319.04 and 216,527.28 is: 324,779.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,894.84 : 640,319.04 = 216,527.28 : x
  2. Step 2: Convert to fraction form
    426,894.84/640,319.04 = 216,527.28/x
  3. Step 3: Cross multiply
    426,894.84x = 640,319.04 × 216,527.28
  4. Step 4: Simplify right side
    426,894.84x = 138,646,540,063.41
  5. Step 5: Solve for x
    x = 138,646,540,063.41/426,894.84
  6. Step 6: Final answer
    x = 324,779.14

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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.