Home / 1,421,472.30-1,961,631.86-776,892.51

Finding the Fourth Proportional to 1,421,472.30, 1,961,631.86 and 776,892.51

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Solution

The fourth proportional to 1,421,472.30, 1,961,631.86 and 776,892.51 is: 1,072,111.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,472.30 : 1,961,631.86 = 776,892.51 : x
  2. Step 2: Convert to fraction form
    1,421,472.30/1,961,631.86 = 776,892.51/x
  3. Step 3: Cross multiply
    1,421,472.30x = 1,961,631.86 × 776,892.51
  4. Step 4: Simplify right side
    1,421,472.30x = 1,523,977,095,526.91
  5. Step 5: Solve for x
    x = 1,523,977,095,526.91/1,421,472.30
  6. Step 6: Final answer
    x = 1,072,111.71

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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.