Home / 712,051.08-982,631.96-389,781.80

Finding the Fourth Proportional to 712,051.08, 982,631.96 and 389,781.80

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Solution

The fourth proportional to 712,051.08, 982,631.96 and 389,781.80 is: 537,899.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,051.08 : 982,631.96 = 389,781.80 : x
  2. Step 2: Convert to fraction form
    712,051.08/982,631.96 = 389,781.80/x
  3. Step 3: Cross multiply
    712,051.08x = 982,631.96 × 389,781.80
  4. Step 4: Simplify right side
    712,051.08x = 383,012,054,106.33
  5. Step 5: Solve for x
    x = 383,012,054,106.33/712,051.08
  6. Step 6: Final answer
    x = 537,899.69

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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.