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Finding the Fourth Proportional to 661,779.42, 913,222.26 and 375,326.16

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Solution

The fourth proportional to 661,779.42, 913,222.26 and 375,326.16 is: 517,931.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,779.42 : 913,222.26 = 375,326.16 : x
  2. Step 2: Convert to fraction form
    661,779.42/913,222.26 = 375,326.16/x
  3. Step 3: Cross multiply
    661,779.42x = 913,222.26 × 375,326.16
  4. Step 4: Simplify right side
    661,779.42x = 342,756,204,072.32
  5. Step 5: Solve for x
    x = 342,756,204,072.32/661,779.42
  6. Step 6: Final answer
    x = 517,931.19

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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.