Home / 411,295,706.69-612,668,781.15-389,018,585.71

Finding the Fourth Proportional to 411,295,706.69, 612,668,781.15 and 389,018,585.71

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Solution

The fourth proportional to 411,295,706.69, 612,668,781.15 and 389,018,585.71 is: 579,484,635.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,295,706.69 : 612,668,781.15 = 389,018,585.71 : x
  2. Step 2: Convert to fraction form
    411,295,706.69/612,668,781.15 = 389,018,585.71/x
  3. Step 3: Cross multiply
    411,295,706.69x = 612,668,781.15 × 389,018,585.71
  4. Step 4: Simplify right side
    411,295,706.69x = 238,339,542,751,569,632
  5. Step 5: Solve for x
    x = 238,339,542,751,569,632/411,295,706.69
  6. Step 6: Final answer
    x = 579,484,635.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.