Home / 1,238,941.98-1,855,411.92-630,128.57

Finding the Fourth Proportional to 1,238,941.98, 1,855,411.92 and 630,128.57

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Solution

The fourth proportional to 1,238,941.98, 1,855,411.92 and 630,128.57 is: 943,666.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,941.98 : 1,855,411.92 = 630,128.57 : x
  2. Step 2: Convert to fraction form
    1,238,941.98/1,855,411.92 = 630,128.57/x
  3. Step 3: Cross multiply
    1,238,941.98x = 1,855,411.92 × 630,128.57
  4. Step 4: Simplify right side
    1,238,941.98x = 1,169,148,050,633.49
  5. Step 5: Solve for x
    x = 1,169,148,050,633.49/1,238,941.98
  6. Step 6: Final answer
    x = 943,666.51

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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.