Home / 730,728.46-1,008,426.52-399,603.86

Finding the Fourth Proportional to 730,728.46, 1,008,426.52 and 399,603.86

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Solution

The fourth proportional to 730,728.46, 1,008,426.52 and 399,603.86 is: 551,464.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    730,728.46 : 1,008,426.52 = 399,603.86 : x
  2. Step 2: Convert to fraction form
    730,728.46/1,008,426.52 = 399,603.86/x
  3. Step 3: Cross multiply
    730,728.46x = 1,008,426.52 × 399,603.86
  4. Step 4: Simplify right side
    730,728.46x = 402,971,129,918.37
  5. Step 5: Solve for x
    x = 402,971,129,918.37/730,728.46
  6. Step 6: Final answer
    x = 551,464.94

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1.5x scale

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.