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Finding the Fourth Proportional to 1,424,384.94, 1,965,675.87 and 779,794.86

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Solution

The fourth proportional to 1,424,384.94, 1,965,675.87 and 779,794.86 is: 1,076,130.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424,384.94 : 1,965,675.87 = 779,794.86 : x
  2. Step 2: Convert to fraction form
    1,424,384.94/1,965,675.87 = 779,794.86/x
  3. Step 3: Cross multiply
    1,424,384.94x = 1,965,675.87 × 779,794.86
  4. Step 4: Simplify right side
    1,424,384.94x = 1,532,823,939,852.03
  5. Step 5: Solve for x
    x = 1,532,823,939,852.03/1,424,384.94
  6. Step 6: Final answer
    x = 1,076,130.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.