Home / 668,827,429.20-1,003,241,143.80-515,772,421.20

Finding the Fourth Proportional to 668,827,429.20, 1,003,241,143.80 and 515,772,421.20

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Solution

The fourth proportional to 668,827,429.20, 1,003,241,143.80 and 515,772,421.20 is: 773,658,631.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,827,429.20 : 1,003,241,143.80 = 515,772,421.20 : x
  2. Step 2: Convert to fraction form
    668,827,429.20/1,003,241,143.80 = 515,772,421.20/x
  3. Step 3: Cross multiply
    668,827,429.20x = 1,003,241,143.80 × 515,772,421.20
  4. Step 4: Simplify right side
    668,827,429.20x = 517,444,113,785,183,360
  5. Step 5: Solve for x
    x = 517,444,113,785,183,360/668,827,429.20
  6. Step 6: Final answer
    x = 773,658,631.80

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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.