Home / 509,405.20-702,948.36-283,042.96

Finding the Fourth Proportional to 509,405.20, 702,948.36 and 283,042.96

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Solution

The fourth proportional to 509,405.20, 702,948.36 and 283,042.96 is: 390,582.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,405.20 : 702,948.36 = 283,042.96 : x
  2. Step 2: Convert to fraction form
    509,405.20/702,948.36 = 283,042.96/x
  3. Step 3: Cross multiply
    509,405.20x = 702,948.36 × 283,042.96
  4. Step 4: Simplify right side
    509,405.20x = 198,964,584,541.55
  5. Step 5: Solve for x
    x = 198,964,584,541.55/509,405.20
  6. Step 6: Final answer
    x = 390,582.16

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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.