Home / 788,163-1,087,666.20-448,631.28

Finding the Fourth Proportional to 788,163, 1,087,666.20 and 448,631.28

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Solution

The fourth proportional to 788,163, 1,087,666.20 and 448,631.28 is: 619,111.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,163 : 1,087,666.20 = 448,631.28 : x
  2. Step 2: Convert to fraction form
    788,163/1,087,666.20 = 448,631.28/x
  3. Step 3: Cross multiply
    788,163x = 1,087,666.20 × 448,631.28
  4. Step 4: Simplify right side
    788,163x = 487,961,079,518.74
  5. Step 5: Solve for x
    x = 487,961,079,518.74/788,163
  6. Step 6: Final answer
    x = 619,111.88

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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.