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Finding the Fourth Proportional to 666,794,656.40, 920,176,625.82 and 373,439,224.40

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Solution

The fourth proportional to 666,794,656.40, 920,176,625.82 and 373,439,224.40 is: 515,346,129.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,794,656.40 : 920,176,625.82 = 373,439,224.40 : x
  2. Step 2: Convert to fraction form
    666,794,656.40/920,176,625.82 = 373,439,224.40/x
  3. Step 3: Cross multiply
    666,794,656.40x = 920,176,625.82 × 373,439,224.40
  4. Step 4: Simplify right side
    666,794,656.40x = 343,630,045,457,229,824
  5. Step 5: Solve for x
    x = 343,630,045,457,229,824/666,794,656.40
  6. Step 6: Final answer
    x = 515,346,129.67

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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.