Home / 1,212,118,256.78-1,672,722,473.55-655,201,312.46

Finding the Fourth Proportional to 1,212,118,256.78, 1,672,722,473.55 and 655,201,312.46

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Solution

The fourth proportional to 1,212,118,256.78, 1,672,722,473.55 and 655,201,312.46 is: 904,177,421.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,118,256.78 : 1,672,722,473.55 = 655,201,312.46 : x
  2. Step 2: Convert to fraction form
    1,212,118,256.78/1,672,722,473.55 = 655,201,312.46/x
  3. Step 3: Cross multiply
    1,212,118,256.78x = 1,672,722,473.55 × 655,201,312.46
  4. Step 4: Simplify right side
    1,212,118,256.78x = 1,095,969,960,051,297,664
  5. Step 5: Solve for x
    x = 1,095,969,960,051,297,664/1,212,118,256.78
  6. Step 6: Final answer
    x = 904,177,421.57

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Double scale
Find fourth proportional to 1,212,118,257.78, 1,672,722,474.93 and 655,201,313.46
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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.