Home / 938,012,592.38-1,407,018,932.30-642,616,426.94

Finding the Fourth Proportional to 938,012,592.38, 1,407,018,932.30 and 642,616,426.94

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Solution

The fourth proportional to 938,012,592.38, 1,407,018,932.30 and 642,616,426.94 is: 963,924,670.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,012,592.38 : 1,407,018,932.30 = 642,616,426.94 : x
  2. Step 2: Convert to fraction form
    938,012,592.38/1,407,018,932.30 = 642,616,426.94/x
  3. Step 3: Cross multiply
    938,012,592.38x = 1,407,018,932.30 × 642,616,426.94
  4. Step 4: Simplify right side
    938,012,592.38x = 904,173,478,906,131,072
  5. Step 5: Solve for x
    x = 904,173,478,906,131,072/938,012,592.38
  6. Step 6: Final answer
    x = 963,924,670.37

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1.5x scale

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.