Home / 509,147.12-702,604.32-282,807.20

Finding the Fourth Proportional to 509,147.12, 702,604.32 and 282,807.20

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Solution

The fourth proportional to 509,147.12, 702,604.32 and 282,807.20 is: 390,263.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,147.12 : 702,604.32 = 282,807.20 : x
  2. Step 2: Convert to fraction form
    509,147.12/702,604.32 = 282,807.20/x
  3. Step 3: Cross multiply
    509,147.12x = 702,604.32 × 282,807.20
  4. Step 4: Simplify right side
    509,147.12x = 198,701,560,447.10
  5. Step 5: Solve for x
    x = 198,701,560,447.10/509,147.12
  6. Step 6: Final answer
    x = 390,263.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.