Home / 764,055.78-1,054,459.53-492,688.50

Finding the Fourth Proportional to 764,055.78, 1,054,459.53 and 492,688.50

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Solution

The fourth proportional to 764,055.78, 1,054,459.53 and 492,688.50 is: 679,950.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,055.78 : 1,054,459.53 = 492,688.50 : x
  2. Step 2: Convert to fraction form
    764,055.78/1,054,459.53 = 492,688.50/x
  3. Step 3: Cross multiply
    764,055.78x = 1,054,459.53 × 492,688.50
  4. Step 4: Simplify right side
    764,055.78x = 519,520,084,146.41
  5. Step 5: Solve for x
    x = 519,520,084,146.41/764,055.78
  6. Step 6: Final answer
    x = 679,950.47

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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.