Home / 472,392,485.70-708,588,728.55-127,333,749.30

Finding the Fourth Proportional to 472,392,485.70, 708,588,728.55 and 127,333,749.30

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Solution

The fourth proportional to 472,392,485.70, 708,588,728.55 and 127,333,749.30 is: 191,000,623.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,485.70 : 708,588,728.55 = 127,333,749.30 : x
  2. Step 2: Convert to fraction form
    472,392,485.70/708,588,728.55 = 127,333,749.30/x
  3. Step 3: Cross multiply
    472,392,485.70x = 708,588,728.55 × 127,333,749.30
  4. Step 4: Simplify right side
    472,392,485.70x = 90,227,259,517,991,440
  5. Step 5: Solve for x
    x = 90,227,259,517,991,440/472,392,485.70
  6. Step 6: Final answer
    x = 191,000,623.95

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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.