Home / 1,235,864,865.38-1,705,494,203.15-678,983,784.71

Finding the Fourth Proportional to 1,235,864,865.38, 1,705,494,203.15 and 678,983,784.71

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Solution

The fourth proportional to 1,235,864,865.38, 1,705,494,203.15 and 678,983,784.71 is: 936,998,001.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235,864,865.38 : 1,705,494,203.15 = 678,983,784.71 : x
  2. Step 2: Convert to fraction form
    1,235,864,865.38/1,705,494,203.15 = 678,983,784.71/x
  3. Step 3: Cross multiply
    1,235,864,865.38x = 1,705,494,203.15 × 678,983,784.71
  4. Step 4: Simplify right side
    1,235,864,865.38x = 1,158,002,908,843,830,272
  5. Step 5: Solve for x
    x = 1,158,002,908,843,830,272/1,235,864,865.38
  6. Step 6: Final answer
    x = 936,998,001.39

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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.