Home / 1,315,702.67-1,971,964.58-640,772.60

Finding the Fourth Proportional to 1,315,702.67, 1,971,964.58 and 640,772.60

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Solution

The fourth proportional to 1,315,702.67, 1,971,964.58 and 640,772.60 is: 960,384.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,702.67 : 1,971,964.58 = 640,772.60 : x
  2. Step 2: Convert to fraction form
    1,315,702.67/1,971,964.58 = 640,772.60/x
  3. Step 3: Cross multiply
    1,315,702.67x = 1,971,964.58 × 640,772.60
  4. Step 4: Simplify right side
    1,315,702.67x = 1,263,580,857,970.82
  5. Step 5: Solve for x
    x = 1,263,580,857,970.82/1,315,702.67
  6. Step 6: Final answer
    x = 960,384.81

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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.