Home / 1,292,912,336.46-1,939,368,530.31-310,338,875.73

Finding the Fourth Proportional to 1,292,912,336.46, 1,939,368,530.31 and 310,338,875.73

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Solution

The fourth proportional to 1,292,912,336.46, 1,939,368,530.31 and 310,338,875.73 is: 465,508,319.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,912,336.46 : 1,939,368,530.31 = 310,338,875.73 : x
  2. Step 2: Convert to fraction form
    1,292,912,336.46/1,939,368,530.31 = 310,338,875.73/x
  3. Step 3: Cross multiply
    1,292,912,336.46x = 1,939,368,530.31 × 310,338,875.73
  4. Step 4: Simplify right side
    1,292,912,336.46x = 601,861,449,322,547,840
  5. Step 5: Solve for x
    x = 601,861,449,322,547,840/1,292,912,336.46
  6. Step 6: Final answer
    x = 465,508,319.74

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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.