Home / 780,278,174.69-1,075,742,215.80-619,874,380.23

Finding the Fourth Proportional to 780,278,174.69, 1,075,742,215.80 and 619,874,380.23

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Solution

The fourth proportional to 780,278,174.69, 1,075,742,215.80 and 619,874,380.23 is: 854,599,117.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,278,174.69 : 1,075,742,215.80 = 619,874,380.23 : x
  2. Step 2: Convert to fraction form
    780,278,174.69/1,075,742,215.80 = 619,874,380.23/x
  3. Step 3: Cross multiply
    780,278,174.69x = 1,075,742,215.80 × 619,874,380.23
  4. Step 4: Simplify right side
    780,278,174.69x = 666,825,039,299,871,616
  5. Step 5: Solve for x
    x = 666,825,039,299,871,616/780,278,174.69
  6. Step 6: Final answer
    x = 854,599,117.26

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1.5x scale

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.