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Finding the Fourth Proportional to 545,757,999.60, 818,636,999.40 and 300,019,681.20

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Solution

The fourth proportional to 545,757,999.60, 818,636,999.40 and 300,019,681.20 is: 450,029,521.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,757,999.60 : 818,636,999.40 = 300,019,681.20 : x
  2. Step 2: Convert to fraction form
    545,757,999.60/818,636,999.40 = 300,019,681.20/x
  3. Step 3: Cross multiply
    545,757,999.60x = 818,636,999.40 × 300,019,681.20
  4. Step 4: Simplify right side
    545,757,999.60x = 245,607,211,578,512,576
  5. Step 5: Solve for x
    x = 245,607,211,578,512,576/545,757,999.60
  6. Step 6: Final answer
    x = 450,029,521.80

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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.