Home / 805,476.52-1,111,281.01-499,442.77

Finding the Fourth Proportional to 805,476.52, 1,111,281.01 and 499,442.77

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Solution

The fourth proportional to 805,476.52, 1,111,281.01 and 499,442.77 is: 689,059.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,476.52 : 1,111,281.01 = 499,442.77 : x
  2. Step 2: Convert to fraction form
    805,476.52/1,111,281.01 = 499,442.77/x
  3. Step 3: Cross multiply
    805,476.52x = 1,111,281.01 × 499,442.77
  4. Step 4: Simplify right side
    805,476.52x = 555,021,265,882.80
  5. Step 5: Solve for x
    x = 555,021,265,882.80/805,476.52
  6. Step 6: Final answer
    x = 689,059.52

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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.