Home / 687,280.96-1,030,507.26-308,133.06

Finding the Fourth Proportional to 687,280.96, 1,030,507.26 and 308,133.06

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Solution

The fourth proportional to 687,280.96, 1,030,507.26 and 308,133.06 is: 462,013.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,280.96 : 1,030,507.26 = 308,133.06 : x
  2. Step 2: Convert to fraction form
    687,280.96/1,030,507.26 = 308,133.06/x
  3. Step 3: Cross multiply
    687,280.96x = 1,030,507.26 × 308,133.06
  4. Step 4: Simplify right side
    687,280.96x = 317,533,355,376.02
  5. Step 5: Solve for x
    x = 317,533,355,376.02/687,280.96
  6. Step 6: Final answer
    x = 462,013.90

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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.