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Finding the Third Proportional to 292,649,851 and 398,607,009

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Solution

The third proportional to 292,649,851 and 398,607,009 is: 542,927,143.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,649,851 : 398,607,009 = 398,607,009 : x
  2. Step 2: Convert to fraction form
    292,649,851/398,607,009 = 398,607,009/x
  3. Step 3: Cross multiply
    292,649,851x = 398,607,009 × 398,607,009
  4. Step 4: Simplify right side
    292,649,851x = 158,887,547,623,926,080
  5. Step 5: Solve for x
    x = 158,887,547,623,926,080/292,649,851
  6. Step 6: Final answer
    x = 542,927,143.41

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.