Home / 1,391,867,575.65-1,920,846,206.61-863,401,833.36

Finding the Fourth Proportional to 1,391,867,575.65, 1,920,846,206.61 and 863,401,833.36

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Solution

The fourth proportional to 1,391,867,575.65, 1,920,846,206.61 and 863,401,833.36 is: 1,191,537,302.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,867,575.65 : 1,920,846,206.61 = 863,401,833.36 : x
  2. Step 2: Convert to fraction form
    1,391,867,575.65/1,920,846,206.61 = 863,401,833.36/x
  3. Step 3: Cross multiply
    1,391,867,575.65x = 1,920,846,206.61 × 863,401,833.36
  4. Step 4: Simplify right side
    1,391,867,575.65x = 1,658,462,136,389,675,264
  5. Step 5: Solve for x
    x = 1,658,462,136,389,675,264/1,391,867,575.65
  6. Step 6: Final answer
    x = 1,191,537,302.40

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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.