Home / 1,326,857,123.80-1,990,285,685.70-890,366,915.80

Finding the Fourth Proportional to 1,326,857,123.80, 1,990,285,685.70 and 890,366,915.80

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Solution

The fourth proportional to 1,326,857,123.80, 1,990,285,685.70 and 890,366,915.80 is: 1,335,550,373.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,857,123.80 : 1,990,285,685.70 = 890,366,915.80 : x
  2. Step 2: Convert to fraction form
    1,326,857,123.80/1,990,285,685.70 = 890,366,915.80/x
  3. Step 3: Cross multiply
    1,326,857,123.80x = 1,990,285,685.70 × 890,366,915.80
  4. Step 4: Simplify right side
    1,326,857,123.80x = 1,772,084,527,537,597,184
  5. Step 5: Solve for x
    x = 1,772,084,527,537,597,184/1,326,857,123.80
  6. Step 6: Final answer
    x = 1,335,550,373.70

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Double scale
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Similar ratio
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1.5x scale

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.