Home / 1,384,000.16-1,909,920.48-780,388.16

Finding the Fourth Proportional to 1,384,000.16, 1,909,920.48 and 780,388.16

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Solution

The fourth proportional to 1,384,000.16, 1,909,920.48 and 780,388.16 is: 1,076,935.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,000.16 : 1,909,920.48 = 780,388.16 : x
  2. Step 2: Convert to fraction form
    1,384,000.16/1,909,920.48 = 780,388.16/x
  3. Step 3: Cross multiply
    1,384,000.16x = 1,909,920.48 × 780,388.16
  4. Step 4: Simplify right side
    1,384,000.16x = 1,490,479,329,133.52
  5. Step 5: Solve for x
    x = 1,490,479,329,133.52/1,384,000.16
  6. Step 6: Final answer
    x = 1,076,935.81

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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.