Home / 1,217,051.91-1,678,004.78-780,699.92

Finding the Fourth Proportional to 1,217,051.91, 1,678,004.78 and 780,699.92

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Solution

The fourth proportional to 1,217,051.91, 1,678,004.78 and 780,699.92 is: 1,076,386.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,051.91 : 1,678,004.78 = 780,699.92 : x
  2. Step 2: Convert to fraction form
    1,217,051.91/1,678,004.78 = 780,699.92/x
  3. Step 3: Cross multiply
    1,217,051.91x = 1,678,004.78 × 780,699.92
  4. Step 4: Simplify right side
    1,217,051.91x = 1,310,018,185,212.09
  5. Step 5: Solve for x
    x = 1,310,018,185,212.09/1,217,051.91
  6. Step 6: Final answer
    x = 1,076,386.45

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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.