Home / 821,668.40-1,233,769.80-448,420.40

Finding the Fourth Proportional to 821,668.40, 1,233,769.80 and 448,420.40

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Solution

The fourth proportional to 821,668.40, 1,233,769.80 and 448,420.40 is: 673,322.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,668.40 : 1,233,769.80 = 448,420.40 : x
  2. Step 2: Convert to fraction form
    821,668.40/1,233,769.80 = 448,420.40/x
  3. Step 3: Cross multiply
    821,668.40x = 1,233,769.80 × 448,420.40
  4. Step 4: Simplify right side
    821,668.40x = 553,247,547,223.92
  5. Step 5: Solve for x
    x = 553,247,547,223.92/821,668.40
  6. Step 6: Final answer
    x = 673,322.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.