Home / 1,224,011.88-1,689,113.96-680,137.76

Finding the Fourth Proportional to 1,224,011.88, 1,689,113.96 and 680,137.76

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Solution

The fourth proportional to 1,224,011.88, 1,689,113.96 and 680,137.76 is: 938,577.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,011.88 : 1,689,113.96 = 680,137.76 : x
  2. Step 2: Convert to fraction form
    1,224,011.88/1,689,113.96 = 680,137.76/x
  3. Step 3: Cross multiply
    1,224,011.88x = 1,689,113.96 × 680,137.76
  4. Step 4: Simplify right side
    1,224,011.88x = 1,148,830,185,139.13
  5. Step 5: Solve for x
    x = 1,148,830,185,139.13/1,224,011.88
  6. Step 6: Final answer
    x = 938,577.64

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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.