Home / 993,112,729.79-1,489,723,419.78-402,815,303.35

Finding the Fourth Proportional to 993,112,729.79, 1,489,723,419.78 and 402,815,303.35

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Solution

The fourth proportional to 993,112,729.79, 1,489,723,419.78 and 402,815,303.35 is: 604,244,989.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,112,729.79 : 1,489,723,419.78 = 402,815,303.35 : x
  2. Step 2: Convert to fraction form
    993,112,729.79/1,489,723,419.78 = 402,815,303.35/x
  3. Step 3: Cross multiply
    993,112,729.79x = 1,489,723,419.78 × 402,815,303.35
  4. Step 4: Simplify right side
    993,112,729.79x = 600,083,391,242,555,776
  5. Step 5: Solve for x
    x = 600,083,391,242,555,776/993,112,729.79
  6. Step 6: Final answer
    x = 604,244,989.76

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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.