Home / 497,931.39-687,142.08-283,071.51

Finding the Fourth Proportional to 497,931.39, 687,142.08 and 283,071.51

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Solution

The fourth proportional to 497,931.39, 687,142.08 and 283,071.51 is: 390,636.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,931.39 : 687,142.08 = 283,071.51 : x
  2. Step 2: Convert to fraction form
    497,931.39/687,142.08 = 283,071.51/x
  3. Step 3: Cross multiply
    497,931.39x = 687,142.08 × 283,071.51
  4. Step 4: Simplify right side
    497,931.39x = 194,510,346,170.14
  5. Step 5: Solve for x
    x = 194,510,346,170.14/497,931.39
  6. Step 6: Final answer
    x = 390,636.84

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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.