Home / 628,884,127.71-867,924,676.26-378,069,718.32

Finding the Fourth Proportional to 628,884,127.71, 867,924,676.26 and 378,069,718.32

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Solution

The fourth proportional to 628,884,127.71, 867,924,676.26 and 378,069,718.32 is: 521,775,035.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,884,127.71 : 867,924,676.26 = 378,069,718.32 : x
  2. Step 2: Convert to fraction form
    628,884,127.71/867,924,676.26 = 378,069,718.32/x
  3. Step 3: Cross multiply
    628,884,127.71x = 867,924,676.26 × 378,069,718.32
  4. Step 4: Simplify right side
    628,884,127.71x = 328,136,037,876,595,392
  5. Step 5: Solve for x
    x = 328,136,037,876,595,392/628,884,127.71
  6. Step 6: Final answer
    x = 521,775,035.21

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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.