Home / 1,277,297,877.85-1,762,667,765.72-712,776,820.74

Finding the Fourth Proportional to 1,277,297,877.85, 1,762,667,765.72 and 712,776,820.74

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Solution

The fourth proportional to 1,277,297,877.85, 1,762,667,765.72 and 712,776,820.74 is: 983,630,167.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,297,877.85 : 1,762,667,765.72 = 712,776,820.74 : x
  2. Step 2: Convert to fraction form
    1,277,297,877.85/1,762,667,765.72 = 712,776,820.74/x
  3. Step 3: Cross multiply
    1,277,297,877.85x = 1,762,667,765.72 × 712,776,820.74
  4. Step 4: Simplify right side
    1,277,297,877.85x = 1,256,388,726,070,780,672
  5. Step 5: Solve for x
    x = 1,256,388,726,070,780,672/1,277,297,877.85
  6. Step 6: Final answer
    x = 983,630,167.92

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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.