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Finding the Fourth Proportional to 696,270.96, 960,845.76 and 390,345.84

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Solution

The fourth proportional to 696,270.96, 960,845.76 and 390,345.84 is: 538,672.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,270.96 : 960,845.76 = 390,345.84 : x
  2. Step 2: Convert to fraction form
    696,270.96/960,845.76 = 390,345.84/x
  3. Step 3: Cross multiply
    696,270.96x = 960,845.76 × 390,345.84
  4. Step 4: Simplify right side
    696,270.96x = 375,062,145,297.64
  5. Step 5: Solve for x
    x = 375,062,145,297.64/696,270.96
  6. Step 6: Final answer
    x = 538,672.68

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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.