Home / 1,289,113-1,779,022.40-745,419.40

Finding the Fourth Proportional to 1,289,113, 1,779,022.40 and 745,419.40

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Solution

The fourth proportional to 1,289,113, 1,779,022.40 and 745,419.40 is: 1,028,705.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,113 : 1,779,022.40 = 745,419.40 : x
  2. Step 2: Convert to fraction form
    1,289,113/1,779,022.40 = 745,419.40/x
  3. Step 3: Cross multiply
    1,289,113x = 1,779,022.40 × 745,419.40
  4. Step 4: Simplify right side
    1,289,113x = 1,326,117,809,994.56
  5. Step 5: Solve for x
    x = 1,326,117,809,994.56/1,289,113
  6. Step 6: Final answer
    x = 1,028,705.64

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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.