Home / 646,558,020-969,845,434.56-215,736,516

Finding the Fourth Proportional to 646,558,020, 969,845,434.56 and 215,736,516

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Solution

The fourth proportional to 646,558,020, 969,845,434.56 and 215,736,516 is: 323,607,578.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,558,020 : 969,845,434.56 = 215,736,516 : x
  2. Step 2: Convert to fraction form
    646,558,020/969,845,434.56 = 215,736,516/x
  3. Step 3: Cross multiply
    646,558,020x = 969,845,434.56 × 215,736,516
  4. Step 4: Simplify right side
    646,558,020x = 209,231,075,110,480,384
  5. Step 5: Solve for x
    x = 209,231,075,110,480,384/646,558,020
  6. Step 6: Final answer
    x = 323,607,578.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.