Home / 647,972.46-972,421.74-288,240.12

Finding the Fourth Proportional to 647,972.46, 972,421.74 and 288,240.12

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Solution

The fourth proportional to 647,972.46, 972,421.74 and 288,240.12 is: 432,566.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,972.46 : 972,421.74 = 288,240.12 : x
  2. Step 2: Convert to fraction form
    647,972.46/972,421.74 = 288,240.12/x
  3. Step 3: Cross multiply
    647,972.46x = 972,421.74 × 288,240.12
  4. Step 4: Simplify right side
    647,972.46x = 280,290,959,028.21
  5. Step 5: Solve for x
    x = 280,290,959,028.21/647,972.46
  6. Step 6: Final answer
    x = 432,566.16

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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.