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Finding the Fourth Proportional to 472,392,485.70, 708,588,728.55 and 355,995,096.90

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Solution

The fourth proportional to 472,392,485.70, 708,588,728.55 and 355,995,096.90 is: 533,992,645.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,485.70 : 708,588,728.55 = 355,995,096.90 : x
  2. Step 2: Convert to fraction form
    472,392,485.70/708,588,728.55 = 355,995,096.90/x
  3. Step 3: Cross multiply
    472,392,485.70x = 708,588,728.55 × 355,995,096.90
  4. Step 4: Simplify right side
    472,392,485.70x = 252,254,113,082,405,024
  5. Step 5: Solve for x
    x = 252,254,113,082,405,024/472,392,485.70
  6. Step 6: Final answer
    x = 533,992,645.35

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Similar ratio
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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.