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Finding the Fourth Proportional to 556,703.89, 768,260.30 and 302,055.08

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Solution

The fourth proportional to 556,703.89, 768,260.30 and 302,055.08 is: 416,840.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,703.89 : 768,260.30 = 302,055.08 : x
  2. Step 2: Convert to fraction form
    556,703.89/768,260.30 = 302,055.08/x
  3. Step 3: Cross multiply
    556,703.89x = 768,260.30 × 302,055.08
  4. Step 4: Simplify right side
    556,703.89x = 232,056,921,025.75
  5. Step 5: Solve for x
    x = 232,056,921,025.75/556,703.89
  6. Step 6: Final answer
    x = 416,840.85

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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.