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Finding the Fourth Proportional to 869,162,707.80, 1,303,744,061.70 and 665,089,363.80

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Solution

The fourth proportional to 869,162,707.80, 1,303,744,061.70 and 665,089,363.80 is: 997,634,045.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,162,707.80 : 1,303,744,061.70 = 665,089,363.80 : x
  2. Step 2: Convert to fraction form
    869,162,707.80/1,303,744,061.70 = 665,089,363.80/x
  3. Step 3: Cross multiply
    869,162,707.80x = 1,303,744,061.70 × 665,089,363.80
  4. Step 4: Simplify right side
    869,162,707.80x = 867,106,308,554,080,896
  5. Step 5: Solve for x
    x = 867,106,308,554,080,896/869,162,707.80
  6. Step 6: Final answer
    x = 997,634,045.70

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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.