Home / 811,880.15-1,120,366.69-449,319.29

Finding the Fourth Proportional to 811,880.15, 1,120,366.69 and 449,319.29

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Solution

The fourth proportional to 811,880.15, 1,120,366.69 and 449,319.29 is: 620,045.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,880.15 : 1,120,366.69 = 449,319.29 : x
  2. Step 2: Convert to fraction form
    811,880.15/1,120,366.69 = 449,319.29/x
  3. Step 3: Cross multiply
    811,880.15x = 1,120,366.69 × 449,319.29
  4. Step 4: Simplify right side
    811,880.15x = 503,402,358,965.32
  5. Step 5: Solve for x
    x = 503,402,358,965.32/811,880.15
  6. Step 6: Final answer
    x = 620,045.17

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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.