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Finding the Fourth Proportional to 923,612.20, 1,289,907.80 and 923,612.20

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Solution

The fourth proportional to 923,612.20, 1,289,907.80 and 923,612.20 is: 1,289,907.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,612.20 : 1,289,907.80 = 923,612.20 : x
  2. Step 2: Convert to fraction form
    923,612.20/1,289,907.80 = 923,612.20/x
  3. Step 3: Cross multiply
    923,612.20x = 1,289,907.80 × 923,612.20
  4. Step 4: Simplify right side
    923,612.20x = 1,191,374,580,955.16
  5. Step 5: Solve for x
    x = 1,191,374,580,955.16/923,612.20
  6. Step 6: Final answer
    x = 1,289,907.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.