Home / 641,698,498.90-885,549,128.75-355,594,804.36

Finding the Fourth Proportional to 641,698,498.90, 885,549,128.75 and 355,594,804.36

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Solution

The fourth proportional to 641,698,498.90, 885,549,128.75 and 355,594,804.36 is: 490,723,711.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,698,498.90 : 885,549,128.75 = 355,594,804.36 : x
  2. Step 2: Convert to fraction form
    641,698,498.90/885,549,128.75 = 355,594,804.36/x
  3. Step 3: Cross multiply
    641,698,498.90x = 885,549,128.75 × 355,594,804.36
  4. Step 4: Simplify right side
    641,698,498.90x = 314,896,669,191,568,960
  5. Step 5: Solve for x
    x = 314,896,669,191,568,960/641,698,498.90
  6. Step 6: Final answer
    x = 490,723,711.73

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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.