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Finding the Fourth Proportional to 487,881.63, 731,066.68 and 338,412.51

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Solution

The fourth proportional to 487,881.63, 731,066.68 and 338,412.51 is: 507,094.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,881.63 : 731,066.68 = 338,412.51 : x
  2. Step 2: Convert to fraction form
    487,881.63/731,066.68 = 338,412.51/x
  3. Step 3: Cross multiply
    487,881.63x = 731,066.68 × 338,412.51
  4. Step 4: Simplify right side
    487,881.63x = 247,402,105,654.80
  5. Step 5: Solve for x
    x = 247,402,105,654.80/487,881.63
  6. Step 6: Final answer
    x = 507,094.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.