Home / 1,013,438.80-1,520,158.20-414,006.40

Finding the Fourth Proportional to 1,013,438.80, 1,520,158.20 and 414,006.40

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Solution

The fourth proportional to 1,013,438.80, 1,520,158.20 and 414,006.40 is: 621,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013,438.80 : 1,520,158.20 = 414,006.40 : x
  2. Step 2: Convert to fraction form
    1,013,438.80/1,520,158.20 = 414,006.40/x
  3. Step 3: Cross multiply
    1,013,438.80x = 1,520,158.20 × 414,006.40
  4. Step 4: Simplify right side
    1,013,438.80x = 629,355,223,812.48
  5. Step 5: Solve for x
    x = 629,355,223,812.48/1,013,438.80
  6. Step 6: Final answer
    x = 621,009.60

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Double scale
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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.