Home / 768,099.84-1,151,656.47-319,130.88

Finding the Fourth Proportional to 768,099.84, 1,151,656.47 and 319,130.88

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Solution

The fourth proportional to 768,099.84, 1,151,656.47 and 319,130.88 is: 478,491.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,099.84 : 1,151,656.47 = 319,130.88 : x
  2. Step 2: Convert to fraction form
    768,099.84/1,151,656.47 = 319,130.88/x
  3. Step 3: Cross multiply
    768,099.84x = 1,151,656.47 × 319,130.88
  4. Step 4: Simplify right side
    768,099.84x = 367,529,142,728.79
  5. Step 5: Solve for x
    x = 367,529,142,728.79/768,099.84
  6. Step 6: Final answer
    x = 478,491.37

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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.