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Finding the Fourth Proportional to 448,005.40, 671,570.70 and 400,766.20

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Solution

The fourth proportional to 448,005.40, 671,570.70 and 400,766.20 is: 600,758.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,005.40 : 671,570.70 = 400,766.20 : x
  2. Step 2: Convert to fraction form
    448,005.40/671,570.70 = 400,766.20/x
  3. Step 3: Cross multiply
    448,005.40x = 671,570.70 × 400,766.20
  4. Step 4: Simplify right side
    448,005.40x = 269,142,837,470.34
  5. Step 5: Solve for x
    x = 269,142,837,470.34/448,005.40
  6. Step 6: Final answer
    x = 600,758.02

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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.