Home / 1,290,947.40-1,936,809.90-692,195.40

Finding the Fourth Proportional to 1,290,947.40, 1,936,809.90 and 692,195.40

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Solution

The fourth proportional to 1,290,947.40, 1,936,809.90 and 692,195.40 is: 1,038,501.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,947.40 : 1,936,809.90 = 692,195.40 : x
  2. Step 2: Convert to fraction form
    1,290,947.40/1,936,809.90 = 692,195.40/x
  3. Step 3: Cross multiply
    1,290,947.40x = 1,936,809.90 × 692,195.40
  4. Step 4: Simplify right side
    1,290,947.40x = 1,340,650,903,454.46
  5. Step 5: Solve for x
    x = 1,340,650,903,454.46/1,290,947.40
  6. Step 6: Final answer
    x = 1,038,501.57

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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.