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Finding the Fourth Proportional to 646,884,003.80, 970,326,005.70 and 629,877,891.80

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Solution

The fourth proportional to 646,884,003.80, 970,326,005.70 and 629,877,891.80 is: 944,816,837.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,884,003.80 : 970,326,005.70 = 629,877,891.80 : x
  2. Step 2: Convert to fraction form
    646,884,003.80/970,326,005.70 = 629,877,891.80/x
  3. Step 3: Cross multiply
    646,884,003.80x = 970,326,005.70 × 629,877,891.80
  4. Step 4: Simplify right side
    646,884,003.80x = 611,186,898,829,030,784
  5. Step 5: Solve for x
    x = 611,186,898,829,030,784/646,884,003.80
  6. Step 6: Final answer
    x = 944,816,837.70

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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.