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Finding the Fourth Proportional to 410,616.20, 612,128.70 and 404,145.40

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Solution

The fourth proportional to 410,616.20, 612,128.70 and 404,145.40 is: 602,482.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,616.20 : 612,128.70 = 404,145.40 : x
  2. Step 2: Convert to fraction form
    410,616.20/612,128.70 = 404,145.40/x
  3. Step 3: Cross multiply
    410,616.20x = 612,128.70 × 404,145.40
  4. Step 4: Simplify right side
    410,616.20x = 247,388,998,312.98
  5. Step 5: Solve for x
    x = 247,388,998,312.98/410,616.20
  6. Step 6: Final answer
    x = 602,482.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.