Home / 1,284,961.24-1,926,085.51-431,223.40

Finding the Fourth Proportional to 1,284,961.24, 1,926,085.51 and 431,223.40

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Solution

The fourth proportional to 1,284,961.24, 1,926,085.51 and 431,223.40 is: 646,379.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,961.24 : 1,926,085.51 = 431,223.40 : x
  2. Step 2: Convert to fraction form
    1,284,961.24/1,926,085.51 = 431,223.40/x
  3. Step 3: Cross multiply
    1,284,961.24x = 1,926,085.51 × 431,223.40
  4. Step 4: Simplify right side
    1,284,961.24x = 830,573,142,312.93
  5. Step 5: Solve for x
    x = 830,573,142,312.93/1,284,961.24
  6. Step 6: Final answer
    x = 646,379.92

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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.