Home / 639,012.42-881,840.10-352,532.40

Finding the Fourth Proportional to 639,012.42, 881,840.10 and 352,532.40

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Solution

The fourth proportional to 639,012.42, 881,840.10 and 352,532.40 is: 486,496.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,012.42 : 881,840.10 = 352,532.40 : x
  2. Step 2: Convert to fraction form
    639,012.42/881,840.10 = 352,532.40/x
  3. Step 3: Cross multiply
    639,012.42x = 881,840.10 × 352,532.40
  4. Step 4: Simplify right side
    639,012.42x = 310,877,206,869.24
  5. Step 5: Solve for x
    x = 310,877,206,869.24/639,012.42
  6. Step 6: Final answer
    x = 486,496.35

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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.