Home / 1,428,295,383.90-2,142,443,075.85-393,316,004.70

Finding the Fourth Proportional to 1,428,295,383.90, 2,142,443,075.85 and 393,316,004.70

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Solution

The fourth proportional to 1,428,295,383.90, 2,142,443,075.85 and 393,316,004.70 is: 589,974,007.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,295,383.90 : 2,142,443,075.85 = 393,316,004.70 : x
  2. Step 2: Convert to fraction form
    1,428,295,383.90/2,142,443,075.85 = 393,316,004.70/x
  3. Step 3: Cross multiply
    1,428,295,383.90x = 2,142,443,075.85 × 393,316,004.70
  4. Step 4: Simplify right side
    1,428,295,383.90x = 842,657,150,890,500,992
  5. Step 5: Solve for x
    x = 842,657,150,890,500,992/1,428,295,383.90
  6. Step 6: Final answer
    x = 589,974,007.05

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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.