Home / 1,242,243,028.80-1,863,364,543.20-380,488,046.40

Finding the Fourth Proportional to 1,242,243,028.80, 1,863,364,543.20 and 380,488,046.40

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Solution

The fourth proportional to 1,242,243,028.80, 1,863,364,543.20 and 380,488,046.40 is: 570,732,069.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,243,028.80 : 1,863,364,543.20 = 380,488,046.40 : x
  2. Step 2: Convert to fraction form
    1,242,243,028.80/1,863,364,543.20 = 380,488,046.40/x
  3. Step 3: Cross multiply
    1,242,243,028.80x = 1,863,364,543.20 × 380,488,046.40
  4. Step 4: Simplify right side
    1,242,243,028.80x = 708,987,934,773,196,416
  5. Step 5: Solve for x
    x = 708,987,934,773,196,416/1,242,243,028.80
  6. Step 6: Final answer
    x = 570,732,069.60

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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.