Home / 1,208,806,836.80-1,813,210,255.20-391,001,806.40

Finding the Fourth Proportional to 1,208,806,836.80, 1,813,210,255.20 and 391,001,806.40

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Solution

The fourth proportional to 1,208,806,836.80, 1,813,210,255.20 and 391,001,806.40 is: 586,502,709.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,806,836.80 : 1,813,210,255.20 = 391,001,806.40 : x
  2. Step 2: Convert to fraction form
    1,208,806,836.80/1,813,210,255.20 = 391,001,806.40/x
  3. Step 3: Cross multiply
    1,208,806,836.80x = 1,813,210,255.20 × 391,001,806.40
  4. Step 4: Simplify right side
    1,208,806,836.80x = 708,968,485,166,204,928
  5. Step 5: Solve for x
    x = 708,968,485,166,204,928/1,208,806,836.80
  6. Step 6: Final answer
    x = 586,502,709.60

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Double scale
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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.