Home / 1,215,785,126.40-1,677,784,909.31-658,868,173.46

Finding the Fourth Proportional to 1,215,785,126.40, 1,677,784,909.31 and 658,868,173.46

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Solution

The fourth proportional to 1,215,785,126.40, 1,677,784,909.31 and 658,868,173.46 is: 909,238,856.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,785,126.40 : 1,677,784,909.31 = 658,868,173.46 : x
  2. Step 2: Convert to fraction form
    1,215,785,126.40/1,677,784,909.31 = 658,868,173.46/x
  3. Step 3: Cross multiply
    1,215,785,126.40x = 1,677,784,909.31 × 658,868,173.46
  4. Step 4: Simplify right side
    1,215,785,126.40x = 1,105,439,078,655,831,424
  5. Step 5: Solve for x
    x = 1,105,439,078,655,831,424/1,215,785,126.40
  6. Step 6: Final answer
    x = 909,238,856.98

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Double scale
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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.