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Finding the Fourth Proportional to 666,973,441.72, 920,412,112.40 and 369,615,078.01

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Solution

The fourth proportional to 666,973,441.72, 920,412,112.40 and 369,615,078.01 is: 510,062,580.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,973,441.72 : 920,412,112.40 = 369,615,078.01 : x
  2. Step 2: Convert to fraction form
    666,973,441.72/920,412,112.40 = 369,615,078.01/x
  3. Step 3: Cross multiply
    666,973,441.72x = 920,412,112.40 × 369,615,078.01
  4. Step 4: Simplify right side
    666,973,441.72x = 340,198,194,726,763,392
  5. Step 5: Solve for x
    x = 340,198,194,726,763,392/666,973,441.72
  6. Step 6: Final answer
    x = 510,062,580.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.