Home / 1,432,689.49-1,977,069.36-788,109.31

Finding the Fourth Proportional to 1,432,689.49, 1,977,069.36 and 788,109.31

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Solution

The fourth proportional to 1,432,689.49, 1,977,069.36 and 788,109.31 is: 1,087,567.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,689.49 : 1,977,069.36 = 788,109.31 : x
  2. Step 2: Convert to fraction form
    1,432,689.49/1,977,069.36 = 788,109.31/x
  3. Step 3: Cross multiply
    1,432,689.49x = 1,977,069.36 × 788,109.31
  4. Step 4: Simplify right side
    1,432,689.49x = 1,558,146,769,131.74
  5. Step 5: Solve for x
    x = 1,558,146,769,131.74/1,432,689.49
  6. Step 6: Final answer
    x = 1,087,567.67

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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.