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Finding the Fourth Proportional to 645,957,986.80, 968,936,980.20 and 301,584,218.80

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Solution

The fourth proportional to 645,957,986.80, 968,936,980.20 and 301,584,218.80 is: 452,376,328.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,957,986.80 : 968,936,980.20 = 301,584,218.80 : x
  2. Step 2: Convert to fraction form
    645,957,986.80/968,936,980.20 = 301,584,218.80/x
  3. Step 3: Cross multiply
    645,957,986.80x = 968,936,980.20 × 301,584,218.80
  4. Step 4: Simplify right side
    645,957,986.80x = 292,216,102,240,048,064
  5. Step 5: Solve for x
    x = 292,216,102,240,048,064/645,957,986.80
  6. Step 6: Final answer
    x = 452,376,328.20

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Double scale
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Similar ratio
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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.