Home / 1,078,849,928.79-1,487,992,525.88-928,396,174.05

Finding the Fourth Proportional to 1,078,849,928.79, 1,487,992,525.88 and 928,396,174.05

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Solution

The fourth proportional to 1,078,849,928.79, 1,487,992,525.88 and 928,396,174.05 is: 1,280,480,751.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,849,928.79 : 1,487,992,525.88 = 928,396,174.05 : x
  2. Step 2: Convert to fraction form
    1,078,849,928.79/1,487,992,525.88 = 928,396,174.05/x
  3. Step 3: Cross multiply
    1,078,849,928.79x = 1,487,992,525.88 × 928,396,174.05
  4. Step 4: Simplify right side
    1,078,849,928.79x = 1,381,446,568,037,345,536
  5. Step 5: Solve for x
    x = 1,381,446,568,037,345,536/1,078,849,928.79
  6. Step 6: Final answer
    x = 1,280,480,751.93

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Double scale
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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.