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Finding the Fourth Proportional to 547,125.60, 818,720.10 and 369,978.60

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Solution

The fourth proportional to 547,125.60, 818,720.10 and 369,978.60 is: 553,636.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,125.60 : 818,720.10 = 369,978.60 : x
  2. Step 2: Convert to fraction form
    547,125.60/818,720.10 = 369,978.60/x
  3. Step 3: Cross multiply
    547,125.60x = 818,720.10 × 369,978.60
  4. Step 4: Simplify right side
    547,125.60x = 302,908,916,389.86
  5. Step 5: Solve for x
    x = 302,908,916,389.86/547,125.60
  6. Step 6: Final answer
    x = 553,636.89

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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.