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Finding the Fourth Proportional to 503,312.49, 694,599.98 and 288,488.34

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Solution

The fourth proportional to 503,312.49, 694,599.98 and 288,488.34 is: 398,130.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,312.49 : 694,599.98 = 288,488.34 : x
  2. Step 2: Convert to fraction form
    503,312.49/694,599.98 = 288,488.34/x
  3. Step 3: Cross multiply
    503,312.49x = 694,599.98 × 288,488.34
  4. Step 4: Simplify right side
    503,312.49x = 200,383,993,751.79
  5. Step 5: Solve for x
    x = 200,383,993,751.79/503,312.49
  6. Step 6: Final answer
    x = 398,130.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.