Home / 639,738,615.80-959,607,923.70-417,808,854.20

Finding the Fourth Proportional to 639,738,615.80, 959,607,923.70 and 417,808,854.20

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Solution

The fourth proportional to 639,738,615.80, 959,607,923.70 and 417,808,854.20 is: 626,713,281.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,738,615.80 : 959,607,923.70 = 417,808,854.20 : x
  2. Step 2: Convert to fraction form
    639,738,615.80/959,607,923.70 = 417,808,854.20/x
  3. Step 3: Cross multiply
    639,738,615.80x = 959,607,923.70 × 417,808,854.20
  4. Step 4: Simplify right side
    639,738,615.80x = 400,932,687,082,338,048
  5. Step 5: Solve for x
    x = 400,932,687,082,338,048/639,738,615.80
  6. Step 6: Final answer
    x = 626,713,281.30

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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.