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Finding the Fourth Proportional to 556,853.94, 767,877.57 and 330,455.70

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Solution

The fourth proportional to 556,853.94, 767,877.57 and 330,455.70 is: 455,684.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,853.94 : 767,877.57 = 330,455.70 : x
  2. Step 2: Convert to fraction form
    556,853.94/767,877.57 = 330,455.70/x
  3. Step 3: Cross multiply
    556,853.94x = 767,877.57 × 330,455.70
  4. Step 4: Simplify right side
    556,853.94x = 253,749,519,908.65
  5. Step 5: Solve for x
    x = 253,749,519,908.65/556,853.94
  6. Step 6: Final answer
    x = 455,684.16

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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.