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Finding the Fourth Proportional to 710,536.91, 980,512.02 and 388,258.16

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Solution

The fourth proportional to 710,536.91, 980,512.02 and 388,258.16 is: 535,780.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,536.91 : 980,512.02 = 388,258.16 : x
  2. Step 2: Convert to fraction form
    710,536.91/980,512.02 = 388,258.16/x
  3. Step 3: Cross multiply
    710,536.91x = 980,512.02 × 388,258.16
  4. Step 4: Simplify right side
    710,536.91x = 380,691,787,840.52
  5. Step 5: Solve for x
    x = 380,691,787,840.52/710,536.91
  6. Step 6: Final answer
    x = 535,780.46

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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.