Home / 689,538,406.80-951,583,192.56-376,292,804.88

Finding the Fourth Proportional to 689,538,406.80, 951,583,192.56 and 376,292,804.88

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Solution

The fourth proportional to 689,538,406.80, 951,583,192.56 and 376,292,804.88 is: 519,295,089.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,538,406.80 : 951,583,192.56 = 376,292,804.88 : x
  2. Step 2: Convert to fraction form
    689,538,406.80/951,583,192.56 = 376,292,804.88/x
  3. Step 3: Cross multiply
    689,538,406.80x = 951,583,192.56 × 376,292,804.88
  4. Step 4: Simplify right side
    689,538,406.80x = 358,073,908,605,067,520
  5. Step 5: Solve for x
    x = 358,073,908,605,067,520/689,538,406.80
  6. Step 6: Final answer
    x = 519,295,089.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.