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Finding the Fourth Proportional to 707,422.49, 976,263.48 and 385,138.07

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Solution

The fourth proportional to 707,422.49, 976,263.48 and 385,138.07 is: 531,501.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,422.49 : 976,263.48 = 385,138.07 : x
  2. Step 2: Convert to fraction form
    707,422.49/976,263.48 = 385,138.07/x
  3. Step 3: Cross multiply
    707,422.49x = 976,263.48 × 385,138.07
  4. Step 4: Simplify right side
    707,422.49x = 375,996,232,498.68
  5. Step 5: Solve for x
    x = 375,996,232,498.68/707,422.49
  6. Step 6: Final answer
    x = 531,501.67

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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.