Home / 687,090.06-1,030,941.81-266,398.74

Finding the Fourth Proportional to 687,090.06, 1,030,941.81 and 266,398.74

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Solution

The fourth proportional to 687,090.06, 1,030,941.81 and 266,398.74 is: 399,717.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,090.06 : 1,030,941.81 = 266,398.74 : x
  2. Step 2: Convert to fraction form
    687,090.06/1,030,941.81 = 266,398.74/x
  3. Step 3: Cross multiply
    687,090.06x = 1,030,941.81 × 266,398.74
  4. Step 4: Simplify right side
    687,090.06x = 274,641,599,197.32
  5. Step 5: Solve for x
    x = 274,641,599,197.32/687,090.06
  6. Step 6: Final answer
    x = 399,717.03

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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.