Home / 674,789.56-931,210.50-388,303.96

Finding the Fourth Proportional to 674,789.56, 931,210.50 and 388,303.96

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Solution

The fourth proportional to 674,789.56, 931,210.50 and 388,303.96 is: 535,859.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,789.56 : 931,210.50 = 388,303.96 : x
  2. Step 2: Convert to fraction form
    674,789.56/931,210.50 = 388,303.96/x
  3. Step 3: Cross multiply
    674,789.56x = 931,210.50 × 388,303.96
  4. Step 4: Simplify right side
    674,789.56x = 361,592,724,743.58
  5. Step 5: Solve for x
    x = 361,592,724,743.58/674,789.56
  6. Step 6: Final answer
    x = 535,859.99

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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.