Home / 1,500,520.64-2,070,718.40-821,457.12

Finding the Fourth Proportional to 1,500,520.64, 2,070,718.40 and 821,457.12

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Solution

The fourth proportional to 1,500,520.64, 2,070,718.40 and 821,457.12 is: 1,133,610.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,500,520.64 : 2,070,718.40 = 821,457.12 : x
  2. Step 2: Convert to fraction form
    1,500,520.64/2,070,718.40 = 821,457.12/x
  3. Step 3: Cross multiply
    1,500,520.64x = 2,070,718.40 × 821,457.12
  4. Step 4: Simplify right side
    1,500,520.64x = 1,701,006,373,195.01
  5. Step 5: Solve for x
    x = 1,701,006,373,195.01/1,500,520.64
  6. Step 6: Final answer
    x = 1,133,610.78

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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.