Home / 614,562,172.80-921,843,259.20-427,308,936.45

Finding the Fourth Proportional to 614,562,172.80, 921,843,259.20 and 427,308,936.45

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Solution

The fourth proportional to 614,562,172.80, 921,843,259.20 and 427,308,936.45 is: 640,963,404.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,562,172.80 : 921,843,259.20 = 427,308,936.45 : x
  2. Step 2: Convert to fraction form
    614,562,172.80/921,843,259.20 = 427,308,936.45/x
  3. Step 3: Cross multiply
    614,562,172.80x = 921,843,259.20 × 427,308,936.45
  4. Step 4: Simplify right side
    614,562,172.80x = 393,911,862,662,353,664
  5. Step 5: Solve for x
    x = 393,911,862,662,353,664/614,562,172.80
  6. Step 6: Final answer
    x = 640,963,404.68

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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.