Home / 639,443,238.48-882,453,060.36-391,876,782.48

Finding the Fourth Proportional to 639,443,238.48, 882,453,060.36 and 391,876,782.48

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Solution

The fourth proportional to 639,443,238.48, 882,453,060.36 and 391,876,782.48 is: 540,803,069.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,443,238.48 : 882,453,060.36 = 391,876,782.48 : x
  2. Step 2: Convert to fraction form
    639,443,238.48/882,453,060.36 = 391,876,782.48/x
  3. Step 3: Cross multiply
    639,443,238.48x = 882,453,060.36 × 391,876,782.48
  4. Step 4: Simplify right side
    639,443,238.48x = 345,812,865,983,506,048
  5. Step 5: Solve for x
    x = 345,812,865,983,506,048/639,443,238.48
  6. Step 6: Final answer
    x = 540,803,069.25

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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.