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Finding the Fourth Proportional to 534,715.20, 802,072.80 and 345,758.40

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Solution

The fourth proportional to 534,715.20, 802,072.80 and 345,758.40 is: 518,637.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,715.20 : 802,072.80 = 345,758.40 : x
  2. Step 2: Convert to fraction form
    534,715.20/802,072.80 = 345,758.40/x
  3. Step 3: Cross multiply
    534,715.20x = 802,072.80 × 345,758.40
  4. Step 4: Simplify right side
    534,715.20x = 277,323,408,011.52
  5. Step 5: Solve for x
    x = 277,323,408,011.52/534,715.20
  6. Step 6: Final answer
    x = 518,637.60

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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.