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Finding the Fourth Proportional to 516,013.80, 774,020.70 and 303,437.40

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Solution

The fourth proportional to 516,013.80, 774,020.70 and 303,437.40 is: 455,156.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,013.80 : 774,020.70 = 303,437.40 : x
  2. Step 2: Convert to fraction form
    516,013.80/774,020.70 = 303,437.40/x
  3. Step 3: Cross multiply
    516,013.80x = 774,020.70 × 303,437.40
  4. Step 4: Simplify right side
    516,013.80x = 234,866,828,754.18
  5. Step 5: Solve for x
    x = 234,866,828,754.18/516,013.80
  6. Step 6: Final answer
    x = 455,156.10

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Similar ratio
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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.