Home / 478,420,649.24-660,220,940.87-258,404,075.24

Finding the Fourth Proportional to 478,420,649.24, 660,220,940.87 and 258,404,075.24

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Solution

The fourth proportional to 478,420,649.24, 660,220,940.87 and 258,404,075.24 is: 356,597,864.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,420,649.24 : 660,220,940.87 = 258,404,075.24 : x
  2. Step 2: Convert to fraction form
    478,420,649.24/660,220,940.87 = 258,404,075.24/x
  3. Step 3: Cross multiply
    478,420,649.24x = 660,220,940.87 × 258,404,075.24
  4. Step 4: Simplify right side
    478,420,649.24x = 170,603,781,676,939,968
  5. Step 5: Solve for x
    x = 170,603,781,676,939,968/478,420,649.24
  6. Step 6: Final answer
    x = 356,597,864.14

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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.