Home / 1,447,685.70-2,170,116.56-689,323.40

Finding the Fourth Proportional to 1,447,685.70, 2,170,116.56 and 689,323.40

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Solution

The fourth proportional to 1,447,685.70, 2,170,116.56 and 689,323.40 is: 1,033,312.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447,685.70 : 2,170,116.56 = 689,323.40 : x
  2. Step 2: Convert to fraction form
    1,447,685.70/2,170,116.56 = 689,323.40/x
  3. Step 3: Cross multiply
    1,447,685.70x = 2,170,116.56 × 689,323.40
  4. Step 4: Simplify right side
    1,447,685.70x = 1,495,912,125,535.50
  5. Step 5: Solve for x
    x = 1,495,912,125,535.50/1,447,685.70
  6. Step 6: Final answer
    x = 1,033,312.77

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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.