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Finding the Fourth Proportional to 520,116.80, 727,230.40 and 520,116.80

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Solution

The fourth proportional to 520,116.80, 727,230.40 and 520,116.80 is: 727,230.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,116.80 : 727,230.40 = 520,116.80 : x
  2. Step 2: Convert to fraction form
    520,116.80/727,230.40 = 520,116.80/x
  3. Step 3: Cross multiply
    520,116.80x = 727,230.40 × 520,116.80
  4. Step 4: Simplify right side
    520,116.80x = 378,244,748,510.72
  5. Step 5: Solve for x
    x = 378,244,748,510.72/520,116.80
  6. Step 6: Final answer
    x = 727,230.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.