Home / 885,065,389.47-1,221,358,223.34-488,579,868.09

Finding the Fourth Proportional to 885,065,389.47, 1,221,358,223.34 and 488,579,868.09

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Solution

The fourth proportional to 885,065,389.47, 1,221,358,223.34 and 488,579,868.09 is: 674,222,545.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,065,389.47 : 1,221,358,223.34 = 488,579,868.09 : x
  2. Step 2: Convert to fraction form
    885,065,389.47/1,221,358,223.34 = 488,579,868.09/x
  3. Step 3: Cross multiply
    885,065,389.47x = 1,221,358,223.34 × 488,579,868.09
  4. Step 4: Simplify right side
    885,065,389.47x = 596,731,039,650,093,824
  5. Step 5: Solve for x
    x = 596,731,039,650,093,824/885,065,389.47
  6. Step 6: Final answer
    x = 674,222,545.31

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Double scale
Find fourth proportional to 885,065,390.47, 1,221,358,224.72 and 488,579,869.09
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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.