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Finding the Fourth Proportional to 551,031.60, 824,970.60 and 339,243.60

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Solution

The fourth proportional to 551,031.60, 824,970.60 and 339,243.60 is: 507,894.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,031.60 : 824,970.60 = 339,243.60 : x
  2. Step 2: Convert to fraction form
    551,031.60/824,970.60 = 339,243.60/x
  3. Step 3: Cross multiply
    551,031.60x = 824,970.60 × 339,243.60
  4. Step 4: Simplify right side
    551,031.60x = 279,865,996,238.16
  5. Step 5: Solve for x
    x = 279,865,996,238.16/551,031.60
  6. Step 6: Final answer
    x = 507,894.64

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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.