Home / 681,686,585.19-1,020,276,859.61-620,429,503.86

Finding the Fourth Proportional to 681,686,585.19, 1,020,276,859.61 and 620,429,503.86

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Solution

The fourth proportional to 681,686,585.19, 1,020,276,859.61 and 620,429,503.86 is: 928,593,696.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,686,585.19 : 1,020,276,859.61 = 620,429,503.86 : x
  2. Step 2: Convert to fraction form
    681,686,585.19/1,020,276,859.61 = 620,429,503.86/x
  3. Step 3: Cross multiply
    681,686,585.19x = 1,020,276,859.61 × 620,429,503.86
  4. Step 4: Simplify right side
    681,686,585.19x = 633,009,865,809,222,272
  5. Step 5: Solve for x
    x = 633,009,865,809,222,272/681,686,585.19
  6. Step 6: Final answer
    x = 928,593,696.23

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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.