Home / 780,278,217.28-1,075,742,274.56-619,874,422.88

Finding the Fourth Proportional to 780,278,217.28, 1,075,742,274.56 and 619,874,422.88

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Solution

The fourth proportional to 780,278,217.28, 1,075,742,274.56 and 619,874,422.88 is: 854,599,176.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,278,217.28 : 1,075,742,274.56 = 619,874,422.88 : x
  2. Step 2: Convert to fraction form
    780,278,217.28/1,075,742,274.56 = 619,874,422.88/x
  3. Step 3: Cross multiply
    780,278,217.28x = 1,075,742,274.56 × 619,874,422.88
  4. Step 4: Simplify right side
    780,278,217.28x = 666,825,121,610,498,432
  5. Step 5: Solve for x
    x = 666,825,121,610,498,432/780,278,217.28
  6. Step 6: Final answer
    x = 854,599,176.09

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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.