Home / 1,243,205,070.35-1,715,614,269.49-678,689,951.92

Finding the Fourth Proportional to 1,243,205,070.35, 1,715,614,269.49 and 678,689,951.92

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Solution

The fourth proportional to 1,243,205,070.35, 1,715,614,269.49 and 678,689,951.92 is: 936,587,369.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,205,070.35 : 1,715,614,269.49 = 678,689,951.92 : x
  2. Step 2: Convert to fraction form
    1,243,205,070.35/1,715,614,269.49 = 678,689,951.92/x
  3. Step 3: Cross multiply
    1,243,205,070.35x = 1,715,614,269.49 × 678,689,951.92
  4. Step 4: Simplify right side
    1,243,205,070.35x = 1,164,370,166,073,433,856
  5. Step 5: Solve for x
    x = 1,164,370,166,073,433,856/1,243,205,070.35
  6. Step 6: Final answer
    x = 936,587,369.09

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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.