Home / 1,289,602.89-1,779,695.15-716,667.21

Finding the Fourth Proportional to 1,289,602.89, 1,779,695.15 and 716,667.21

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Solution

The fourth proportional to 1,289,602.89, 1,779,695.15 and 716,667.21 is: 989,024.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,602.89 : 1,779,695.15 = 716,667.21 : x
  2. Step 2: Convert to fraction form
    1,289,602.89/1,779,695.15 = 716,667.21/x
  3. Step 3: Cross multiply
    1,289,602.89x = 1,779,695.15 × 716,667.21
  4. Step 4: Simplify right side
    1,289,602.89x = 1,275,449,154,217.70
  5. Step 5: Solve for x
    x = 1,275,449,154,217.70/1,289,602.89
  6. Step 6: Final answer
    x = 989,024.73

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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.