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Finding the Fourth Proportional to 667,154,058.39, 920,671,006.73 and 365,738,831.55

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Solution

The fourth proportional to 667,154,058.39, 920,671,006.73 and 365,738,831.55 is: 504,718,713.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,154,058.39 : 920,671,006.73 = 365,738,831.55 : x
  2. Step 2: Convert to fraction form
    667,154,058.39/920,671,006.73 = 365,738,831.55/x
  3. Step 3: Cross multiply
    667,154,058.39x = 920,671,006.73 × 365,738,831.55
  4. Step 4: Simplify right side
    667,154,058.39x = 336,725,138,241,563,712
  5. Step 5: Solve for x
    x = 336,725,138,241,563,712/667,154,058.39
  6. Step 6: Final answer
    x = 504,718,713.78

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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.