Home / 1,290,669.28-1,781,166.88-709,916.96

Finding the Fourth Proportional to 1,290,669.28, 1,781,166.88 and 709,916.96

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Solution

The fourth proportional to 1,290,669.28, 1,781,166.88 and 709,916.96 is: 979,709.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,669.28 : 1,781,166.88 = 709,916.96 : x
  2. Step 2: Convert to fraction form
    1,290,669.28/1,781,166.88 = 709,916.96/x
  3. Step 3: Cross multiply
    1,290,669.28x = 1,781,166.88 × 709,916.96
  4. Step 4: Simplify right side
    1,290,669.28x = 1,264,480,576,702.28
  5. Step 5: Solve for x
    x = 1,264,480,576,702.28/1,290,669.28
  6. Step 6: Final answer
    x = 979,709.21

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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.