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Finding the Fourth Proportional to 656,078.46, 905,391.51 and 369,603.06

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Solution

The fourth proportional to 656,078.46, 905,391.51 and 369,603.06 is: 510,054.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,078.46 : 905,391.51 = 369,603.06 : x
  2. Step 2: Convert to fraction form
    656,078.46/905,391.51 = 369,603.06/x
  3. Step 3: Cross multiply
    656,078.46x = 905,391.51 × 369,603.06
  4. Step 4: Simplify right side
    656,078.46x = 334,635,472,594.02
  5. Step 5: Solve for x
    x = 334,635,472,594.02/656,078.46
  6. Step 6: Final answer
    x = 510,054.05

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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.