Home / 641,698,511.85-885,549,146.60-355,594,817.25

Finding the Fourth Proportional to 641,698,511.85, 885,549,146.60 and 355,594,817.25

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Solution

The fourth proportional to 641,698,511.85, 885,549,146.60 and 355,594,817.25 is: 490,723,729.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,698,511.85 : 885,549,146.60 = 355,594,817.25 : x
  2. Step 2: Convert to fraction form
    641,698,511.85/885,549,146.60 = 355,594,817.25/x
  3. Step 3: Cross multiply
    641,698,511.85x = 885,549,146.60 × 355,594,817.25
  4. Step 4: Simplify right side
    641,698,511.85x = 314,896,686,949,342,464
  5. Step 5: Solve for x
    x = 314,896,686,949,342,464/641,698,511.85
  6. Step 6: Final answer
    x = 490,723,729.50

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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.