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Finding the Fourth Proportional to 556,616.63, 767,656.67 and 427,866.72

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Solution

The fourth proportional to 556,616.63, 767,656.67 and 427,866.72 is: 590,091.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,616.63 : 767,656.67 = 427,866.72 : x
  2. Step 2: Convert to fraction form
    556,616.63/767,656.67 = 427,866.72/x
  3. Step 3: Cross multiply
    556,616.63x = 767,656.67 × 427,866.72
  4. Step 4: Simplify right side
    556,616.63x = 328,454,739,339.69
  5. Step 5: Solve for x
    x = 328,454,739,339.69/556,616.63
  6. Step 6: Final answer
    x = 590,091.50

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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.