Home / 1,216,813.96-1,679,427.90-781,775.14

Finding the Fourth Proportional to 1,216,813.96, 1,679,427.90 and 781,775.14

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Solution

The fourth proportional to 1,216,813.96, 1,679,427.90 and 781,775.14 is: 1,078,994.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,813.96 : 1,679,427.90 = 781,775.14 : x
  2. Step 2: Convert to fraction form
    1,216,813.96/1,679,427.90 = 781,775.14/x
  3. Step 3: Cross multiply
    1,216,813.96x = 1,679,427.90 × 781,775.14
  4. Step 4: Simplify right side
    1,216,813.96x = 1,312,934,977,443.84
  5. Step 5: Solve for x
    x = 1,312,934,977,443.84/1,216,813.96
  6. Step 6: Final answer
    x = 1,078,994.01

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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.