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Finding the Third Proportional to 179,478,913 and 390,404,240

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Solution

The third proportional to 179,478,913 and 390,404,240 is: 849,211,019.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,478,913 : 390,404,240 = 390,404,240 : x
  2. Step 2: Convert to fraction form
    179,478,913/390,404,240 = 390,404,240/x
  3. Step 3: Cross multiply
    179,478,913x = 390,404,240 × 390,404,240
  4. Step 4: Simplify right side
    179,478,913x = 152,415,470,609,977,600
  5. Step 5: Solve for x
    x = 152,415,470,609,977,600/179,478,913
  6. Step 6: Final answer
    x = 849,211,019.07

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.