Home / 805,613.95-1,111,721.79-443,036.68

Finding the Fourth Proportional to 805,613.95, 1,111,721.79 and 443,036.68

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Solution

The fourth proportional to 805,613.95, 1,111,721.79 and 443,036.68 is: 611,376.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,613.95 : 1,111,721.79 = 443,036.68 : x
  2. Step 2: Convert to fraction form
    805,613.95/1,111,721.79 = 443,036.68/x
  3. Step 3: Cross multiply
    805,613.95x = 1,111,721.79 × 443,036.68
  4. Step 4: Simplify right side
    805,613.95x = 492,533,536,060.78
  5. Step 5: Solve for x
    x = 492,533,536,060.78/805,613.95
  6. Step 6: Final answer
    x = 611,376.63

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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.