Home / 721,314,128.70-1,082,016,075.69-261,256,283.74

Finding the Fourth Proportional to 721,314,128.70, 1,082,016,075.69 and 261,256,283.74

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Solution

The fourth proportional to 721,314,128.70, 1,082,016,075.69 and 261,256,283.74 is: 391,900,681.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,314,128.70 : 1,082,016,075.69 = 261,256,283.74 : x
  2. Step 2: Convert to fraction form
    721,314,128.70/1,082,016,075.69 = 261,256,283.74/x
  3. Step 3: Cross multiply
    721,314,128.70x = 1,082,016,075.69 × 261,256,283.74
  4. Step 4: Simplify right side
    721,314,128.70x = 282,683,498,881,707,968
  5. Step 5: Solve for x
    x = 282,683,498,881,707,968/721,314,128.70
  6. Step 6: Final answer
    x = 391,900,681.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.