Home / 939,378,085.76-1,296,306,201.12-521,717,263.04

Finding the Fourth Proportional to 939,378,085.76, 1,296,306,201.12 and 521,717,263.04

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Solution

The fourth proportional to 939,378,085.76, 1,296,306,201.12 and 521,717,263.04 is: 719,950,075.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,378,085.76 : 1,296,306,201.12 = 521,717,263.04 : x
  2. Step 2: Convert to fraction form
    939,378,085.76/1,296,306,201.12 = 521,717,263.04/x
  3. Step 3: Cross multiply
    939,378,085.76x = 1,296,306,201.12 × 521,717,263.04
  4. Step 4: Simplify right side
    939,378,085.76x = 676,305,323,310,106,112
  5. Step 5: Solve for x
    x = 676,305,323,310,106,112/939,378,085.76
  6. Step 6: Final answer
    x = 719,950,075.01

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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.