Home / 879,336,002.80-1,319,004,004.20-621,346,985.20

Finding the Fourth Proportional to 879,336,002.80, 1,319,004,004.20 and 621,346,985.20

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Solution

The fourth proportional to 879,336,002.80, 1,319,004,004.20 and 621,346,985.20 is: 932,020,477.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,336,002.80 : 1,319,004,004.20 = 621,346,985.20 : x
  2. Step 2: Convert to fraction form
    879,336,002.80/1,319,004,004.20 = 621,346,985.20/x
  3. Step 3: Cross multiply
    879,336,002.80x = 1,319,004,004.20 × 621,346,985.20
  4. Step 4: Simplify right side
    879,336,002.80x = 819,559,161,476,398,208
  5. Step 5: Solve for x
    x = 819,559,161,476,398,208/879,336,002.80
  6. Step 6: Final answer
    x = 932,020,477.80

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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.