Home / 923,428.80-1,384,106.40-390,859.20

Finding the Fourth Proportional to 923,428.80, 1,384,106.40 and 390,859.20

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Solution

The fourth proportional to 923,428.80, 1,384,106.40 and 390,859.20 is: 585,849.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,428.80 : 1,384,106.40 = 390,859.20 : x
  2. Step 2: Convert to fraction form
    923,428.80/1,384,106.40 = 390,859.20/x
  3. Step 3: Cross multiply
    923,428.80x = 1,384,106.40 × 390,859.20
  4. Step 4: Simplify right side
    923,428.80x = 540,990,720,218.88
  5. Step 5: Solve for x
    x = 540,990,720,218.88/923,428.80
  6. Step 6: Final answer
    x = 585,849.95

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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.