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Finding the Fourth Proportional to 507,487.91, 700,300.49 and 278,044.88

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Solution

The fourth proportional to 507,487.91, 700,300.49 and 278,044.88 is: 383,683.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,487.91 : 700,300.49 = 278,044.88 : x
  2. Step 2: Convert to fraction form
    507,487.91/700,300.49 = 278,044.88/x
  3. Step 3: Cross multiply
    507,487.91x = 700,300.49 × 278,044.88
  4. Step 4: Simplify right side
    507,487.91x = 194,714,960,814.26
  5. Step 5: Solve for x
    x = 194,714,960,814.26/507,487.91
  6. Step 6: Final answer
    x = 383,683.94

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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.