Home / 807,079.88-1,113,503.64-520,790.24

Finding the Fourth Proportional to 807,079.88, 1,113,503.64 and 520,790.24

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Solution

The fourth proportional to 807,079.88, 1,113,503.64 and 520,790.24 is: 718,518.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,079.88 : 1,113,503.64 = 520,790.24 : x
  2. Step 2: Convert to fraction form
    807,079.88/1,113,503.64 = 520,790.24/x
  3. Step 3: Cross multiply
    807,079.88x = 1,113,503.64 × 520,790.24
  4. Step 4: Simplify right side
    807,079.88x = 579,901,827,916.47
  5. Step 5: Solve for x
    x = 579,901,827,916.47/807,079.88
  6. Step 6: Final answer
    x = 718,518.50

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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.