Home / 489,708.69-675,798-274,848.76

Finding the Fourth Proportional to 489,708.69, 675,798 and 274,848.76

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Solution

The fourth proportional to 489,708.69, 675,798 and 274,848.76 is: 379,291.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,708.69 : 675,798 = 274,848.76 : x
  2. Step 2: Convert to fraction form
    489,708.69/675,798 = 274,848.76/x
  3. Step 3: Cross multiply
    489,708.69x = 675,798 × 274,848.76
  4. Step 4: Simplify right side
    489,708.69x = 185,742,238,931.49
  5. Step 5: Solve for x
    x = 185,742,238,931.49/489,708.69
  6. Step 6: Final answer
    x = 379,291.29

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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.