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Finding the Fourth Proportional to 594,420.80, 891,631.20 and 391,467.20

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Solution

The fourth proportional to 594,420.80, 891,631.20 and 391,467.20 is: 587,200.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    594,420.80 : 891,631.20 = 391,467.20 : x
  2. Step 2: Convert to fraction form
    594,420.80/891,631.20 = 391,467.20/x
  3. Step 3: Cross multiply
    594,420.80x = 891,631.20 × 391,467.20
  4. Step 4: Simplify right side
    594,420.80x = 349,044,369,296.64
  5. Step 5: Solve for x
    x = 349,044,369,296.64/594,420.80
  6. Step 6: Final answer
    x = 587,200.80

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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.