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Finding the Fourth Proportional to 520,823.80, 781,235.70 and 146,846.80

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Solution

The fourth proportional to 520,823.80, 781,235.70 and 146,846.80 is: 220,270.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,823.80 : 781,235.70 = 146,846.80 : x
  2. Step 2: Convert to fraction form
    520,823.80/781,235.70 = 146,846.80/x
  3. Step 3: Cross multiply
    520,823.80x = 781,235.70 × 146,846.80
  4. Step 4: Simplify right side
    520,823.80x = 114,721,962,590.76
  5. Step 5: Solve for x
    x = 114,721,962,590.76/520,823.80
  6. Step 6: Final answer
    x = 220,270.20

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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.