Home / 1,000,431-1,500,192.90-431,543.70

Finding the Fourth Proportional to 1,000,431, 1,500,192.90 and 431,543.70

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Solution

The fourth proportional to 1,000,431, 1,500,192.90 and 431,543.70 is: 647,119.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,000,431 : 1,500,192.90 = 431,543.70 : x
  2. Step 2: Convert to fraction form
    1,000,431/1,500,192.90 = 431,543.70/x
  3. Step 3: Cross multiply
    1,000,431x = 1,500,192.90 × 431,543.70
  4. Step 4: Simplify right side
    1,000,431x = 647,398,794,779.73
  5. Step 5: Solve for x
    x = 647,398,794,779.73/1,000,431
  6. Step 6: Final answer
    x = 647,119.89

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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.