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Finding the Fourth Proportional to 738,064.80, 1,105,128.90 and 738,064.80

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Solution

The fourth proportional to 738,064.80, 1,105,128.90 and 738,064.80 is: 1,105,128.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,064.80 : 1,105,128.90 = 738,064.80 : x
  2. Step 2: Convert to fraction form
    738,064.80/1,105,128.90 = 738,064.80/x
  3. Step 3: Cross multiply
    738,064.80x = 1,105,128.90 × 738,064.80
  4. Step 4: Simplify right side
    738,064.80x = 815,656,740,552.72
  5. Step 5: Solve for x
    x = 815,656,740,552.72/738,064.80
  6. Step 6: Final answer
    x = 1,105,128.90

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1.5x scale

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.