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Finding the Fourth Proportional to 604,051.65, 908,045.78 and 427,779.45

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Solution

The fourth proportional to 604,051.65, 908,045.78 and 427,779.45 is: 643,063.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,051.65 : 908,045.78 = 427,779.45 : x
  2. Step 2: Convert to fraction form
    604,051.65/908,045.78 = 427,779.45/x
  3. Step 3: Cross multiply
    604,051.65x = 908,045.78 × 427,779.45
  4. Step 4: Simplify right side
    604,051.65x = 388,443,322,204.32
  5. Step 5: Solve for x
    x = 388,443,322,204.32/604,051.65
  6. Step 6: Final answer
    x = 643,063.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.