Home / 1,398,444,098.67-1,929,853,045.07-771,912,644.85

Finding the Fourth Proportional to 1,398,444,098.67, 1,929,853,045.07 and 771,912,644.85

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Solution

The fourth proportional to 1,398,444,098.67, 1,929,853,045.07 and 771,912,644.85 is: 1,065,239,554.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,444,098.67 : 1,929,853,045.07 = 771,912,644.85 : x
  2. Step 2: Convert to fraction form
    1,398,444,098.67/1,929,853,045.07 = 771,912,644.85/x
  3. Step 3: Cross multiply
    1,398,444,098.67x = 1,929,853,045.07 × 771,912,644.85
  4. Step 4: Simplify right side
    1,398,444,098.67x = 1,489,677,968,187,950,592
  5. Step 5: Solve for x
    x = 1,489,677,968,187,950,592/1,398,444,098.67
  6. Step 6: Final answer
    x = 1,065,239,554.16

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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.