Home / 938,012,602.39-1,407,018,947.31-642,616,436.95

Finding the Fourth Proportional to 938,012,602.39, 1,407,018,947.31 and 642,616,436.95

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Solution

The fourth proportional to 938,012,602.39, 1,407,018,947.31 and 642,616,436.95 is: 963,924,685.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,012,602.39 : 1,407,018,947.31 = 642,616,436.95 : x
  2. Step 2: Convert to fraction form
    938,012,602.39/1,407,018,947.31 = 642,616,436.95/x
  3. Step 3: Cross multiply
    938,012,602.39x = 1,407,018,947.31 × 642,616,436.95
  4. Step 4: Simplify right side
    938,012,602.39x = 904,173,502,641,491,968
  5. Step 5: Solve for x
    x = 904,173,502,641,491,968/938,012,602.39
  6. Step 6: Final answer
    x = 963,924,685.38

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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.