Home / 890,315.40-1,335,461.48-216,394.77

Finding the Fourth Proportional to 890,315.40, 1,335,461.48 and 216,394.77

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Solution

The fourth proportional to 890,315.40, 1,335,461.48 and 216,394.77 is: 324,589.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,315.40 : 1,335,461.48 = 216,394.77 : x
  2. Step 2: Convert to fraction form
    890,315.40/1,335,461.48 = 216,394.77/x
  3. Step 3: Cross multiply
    890,315.40x = 1,335,461.48 × 216,394.77
  4. Step 4: Simplify right side
    890,315.40x = 288,986,873,277.99
  5. Step 5: Solve for x
    x = 288,986,873,277.99/890,315.40
  6. Step 6: Final answer
    x = 324,589.32

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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.