Home / 1,277,742,977.76-1,763,286,485.85-691,032,113.76

Finding the Fourth Proportional to 1,277,742,977.76, 1,763,286,485.85 and 691,032,113.76

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Solution

The fourth proportional to 1,277,742,977.76, 1,763,286,485.85 and 691,032,113.76 is: 953,624,953.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,742,977.76 : 1,763,286,485.85 = 691,032,113.76 : x
  2. Step 2: Convert to fraction form
    1,277,742,977.76/1,763,286,485.85 = 691,032,113.76/x
  3. Step 3: Cross multiply
    1,277,742,977.76x = 1,763,286,485.85 × 691,032,113.76
  4. Step 4: Simplify right side
    1,277,742,977.76x = 1,218,487,587,481,367,808
  5. Step 5: Solve for x
    x = 1,218,487,587,481,367,808/1,277,742,977.76
  6. Step 6: Final answer
    x = 953,624,953.29

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Double scale
Find fourth proportional to 1,277,742,978.76, 1,763,286,487.23 and 691,032,114.76
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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.