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Finding the Fourth Proportional to 1,985,473,615.80, 2,978,210,423.70 and 531,451,039.80

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Solution

The fourth proportional to 1,985,473,615.80, 2,978,210,423.70 and 531,451,039.80 is: 797,176,559.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985,473,615.80 : 2,978,210,423.70 = 531,451,039.80 : x
  2. Step 2: Convert to fraction form
    1,985,473,615.80/2,978,210,423.70 = 531,451,039.80/x
  3. Step 3: Cross multiply
    1,985,473,615.80x = 2,978,210,423.70 × 531,451,039.80
  4. Step 4: Simplify right side
    1,985,473,615.80x = 1,582,773,026,418,563,584
  5. Step 5: Solve for x
    x = 1,582,773,026,418,563,584/1,985,473,615.80
  6. Step 6: Final answer
    x = 797,176,559.70

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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.