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Finding the Fourth Proportional to 548,418.70, 822,628.05 and 478,434.70

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Solution

The fourth proportional to 548,418.70, 822,628.05 and 478,434.70 is: 717,652.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,418.70 : 822,628.05 = 478,434.70 : x
  2. Step 2: Convert to fraction form
    548,418.70/822,628.05 = 478,434.70/x
  3. Step 3: Cross multiply
    548,418.70x = 822,628.05 × 478,434.70
  4. Step 4: Simplify right side
    548,418.70x = 393,573,804,313.34
  5. Step 5: Solve for x
    x = 393,573,804,313.34/548,418.70
  6. Step 6: Final answer
    x = 717,652.05

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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.