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Finding the Fourth Proportional to 570,345.76, 787,161.54 and 328,582.36

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Solution

The fourth proportional to 570,345.76, 787,161.54 and 328,582.36 is: 453,492.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,345.76 : 787,161.54 = 328,582.36 : x
  2. Step 2: Convert to fraction form
    570,345.76/787,161.54 = 328,582.36/x
  3. Step 3: Cross multiply
    570,345.76x = 787,161.54 × 328,582.36
  4. Step 4: Simplify right side
    570,345.76x = 258,647,396,514.43
  5. Step 5: Solve for x
    x = 258,647,396,514.43/570,345.76
  6. Step 6: Final answer
    x = 453,492.28

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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.