Home / 1,788,237.60-2,680,606.80-721,856.40

Finding the Fourth Proportional to 1,788,237.60, 2,680,606.80 and 721,856.40

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Solution

The fourth proportional to 1,788,237.60, 2,680,606.80 and 721,856.40 is: 1,082,078.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788,237.60 : 2,680,606.80 = 721,856.40 : x
  2. Step 2: Convert to fraction form
    1,788,237.60/2,680,606.80 = 721,856.40/x
  3. Step 3: Cross multiply
    1,788,237.60x = 2,680,606.80 × 721,856.40
  4. Step 4: Simplify right side
    1,788,237.60x = 1,935,013,174,463.52
  5. Step 5: Solve for x
    x = 1,935,013,174,463.52/1,788,237.60
  6. Step 6: Final answer
    x = 1,082,078.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.