Home / 1,215,785,124.90-1,677,784,907.24-658,868,171.96

Finding the Fourth Proportional to 1,215,785,124.90, 1,677,784,907.24 and 658,868,171.96

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Solution

The fourth proportional to 1,215,785,124.90, 1,677,784,907.24 and 658,868,171.96 is: 909,238,854.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,785,124.90 : 1,677,784,907.24 = 658,868,171.96 : x
  2. Step 2: Convert to fraction form
    1,215,785,124.90/1,677,784,907.24 = 658,868,171.96/x
  3. Step 3: Cross multiply
    1,215,785,124.90x = 1,677,784,907.24 × 658,868,171.96
  4. Step 4: Simplify right side
    1,215,785,124.90x = 1,105,439,074,780,479,616
  5. Step 5: Solve for x
    x = 1,105,439,074,780,479,616/1,215,785,124.90
  6. Step 6: Final answer
    x = 909,238,854.91

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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.