Home / 763,364.32-1,145,268.08-307,720.40

Finding the Fourth Proportional to 763,364.32, 1,145,268.08 and 307,720.40

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Solution

The fourth proportional to 763,364.32, 1,145,268.08 and 307,720.40 is: 461,669.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,364.32 : 1,145,268.08 = 307,720.40 : x
  2. Step 2: Convert to fraction form
    763,364.32/1,145,268.08 = 307,720.40/x
  3. Step 3: Cross multiply
    763,364.32x = 1,145,268.08 × 307,720.40
  4. Step 4: Simplify right side
    763,364.32x = 352,422,351,684.83
  5. Step 5: Solve for x
    x = 352,422,351,684.83/763,364.32
  6. Step 6: Final answer
    x = 461,669.93

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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.