Home / 1,280,048.42-1,919,429.78-426,818.01

Finding the Fourth Proportional to 1,280,048.42, 1,919,429.78 and 426,818.01

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Solution

The fourth proportional to 1,280,048.42, 1,919,429.78 and 426,818.01 is: 640,012.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,048.42 : 1,919,429.78 = 426,818.01 : x
  2. Step 2: Convert to fraction form
    1,280,048.42/1,919,429.78 = 426,818.01/x
  3. Step 3: Cross multiply
    1,280,048.42x = 1,919,429.78 × 426,818.01
  4. Step 4: Simplify right side
    1,280,048.42x = 819,247,199,034.34
  5. Step 5: Solve for x
    x = 819,247,199,034.34/1,280,048.42
  6. Step 6: Final answer
    x = 640,012.66

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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.