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Finding the Fourth Proportional to 695,891.37, 960,397.41 and 390,019.38

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Solution

The fourth proportional to 695,891.37, 960,397.41 and 390,019.38 is: 538,264.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,891.37 : 960,397.41 = 390,019.38 : x
  2. Step 2: Convert to fraction form
    695,891.37/960,397.41 = 390,019.38/x
  3. Step 3: Cross multiply
    695,891.37x = 960,397.41 × 390,019.38
  4. Step 4: Simplify right side
    695,891.37x = 374,573,602,401.81
  5. Step 5: Solve for x
    x = 374,573,602,401.81/695,891.37
  6. Step 6: Final answer
    x = 538,264.47

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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.