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Finding the Fourth Proportional to 547,459.40, 820,630.20 and 369,984.35

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Solution

The fourth proportional to 547,459.40, 820,630.20 and 369,984.35 is: 554,598.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,459.40 : 820,630.20 = 369,984.35 : x
  2. Step 2: Convert to fraction form
    547,459.40/820,630.20 = 369,984.35/x
  3. Step 3: Cross multiply
    547,459.40x = 820,630.20 × 369,984.35
  4. Step 4: Simplify right side
    547,459.40x = 303,620,331,137.37
  5. Step 5: Solve for x
    x = 303,620,331,137.37/547,459.40
  6. Step 6: Final answer
    x = 554,598.81

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1.5x scale

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.