Home / 1,078,742.60-1,617,530.70-447,720.20

Finding the Fourth Proportional to 1,078,742.60, 1,617,530.70 and 447,720.20

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Solution

The fourth proportional to 1,078,742.60, 1,617,530.70 and 447,720.20 is: 671,338.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,742.60 : 1,617,530.70 = 447,720.20 : x
  2. Step 2: Convert to fraction form
    1,078,742.60/1,617,530.70 = 447,720.20/x
  3. Step 3: Cross multiply
    1,078,742.60x = 1,617,530.70 × 447,720.20
  4. Step 4: Simplify right side
    1,078,742.60x = 724,201,168,510.14
  5. Step 5: Solve for x
    x = 724,201,168,510.14/1,078,742.60
  6. Step 6: Final answer
    x = 671,338.25

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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.