Home / 711,741.76-982,203.63-389,451.86

Finding the Fourth Proportional to 711,741.76, 982,203.63 and 389,451.86

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Solution

The fourth proportional to 711,741.76, 982,203.63 and 389,451.86 is: 537,443.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,741.76 : 982,203.63 = 389,451.86 : x
  2. Step 2: Convert to fraction form
    711,741.76/982,203.63 = 389,451.86/x
  3. Step 3: Cross multiply
    711,741.76x = 982,203.63 × 389,451.86
  4. Step 4: Simplify right side
    711,741.76x = 382,521,030,602.25
  5. Step 5: Solve for x
    x = 382,521,030,602.25/711,741.76
  6. Step 6: Final answer
    x = 537,443.57

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Double scale
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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.