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Finding the Fourth Proportional to 646,673,071.60, 970,009,607.40 and 186,626,249.20

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Solution

The fourth proportional to 646,673,071.60, 970,009,607.40 and 186,626,249.20 is: 279,939,373.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,673,071.60 : 970,009,607.40 = 186,626,249.20 : x
  2. Step 2: Convert to fraction form
    646,673,071.60/970,009,607.40 = 186,626,249.20/x
  3. Step 3: Cross multiply
    646,673,071.60x = 970,009,607.40 × 186,626,249.20
  4. Step 4: Simplify right side
    646,673,071.60x = 181,029,254,717,026,560
  5. Step 5: Solve for x
    x = 181,029,254,717,026,560/646,673,071.60
  6. Step 6: Final answer
    x = 279,939,373.80

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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.