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Finding the Fourth Proportional to 602,938.60, 832,071.78 and 388,493.80

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Solution

The fourth proportional to 602,938.60, 832,071.78 and 388,493.80 is: 536,132.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,938.60 : 832,071.78 = 388,493.80 : x
  2. Step 2: Convert to fraction form
    602,938.60/832,071.78 = 388,493.80/x
  3. Step 3: Cross multiply
    602,938.60x = 832,071.78 × 388,493.80
  4. Step 4: Simplify right side
    602,938.60x = 323,254,727,684.96
  5. Step 5: Solve for x
    x = 323,254,727,684.96/602,938.60
  6. Step 6: Final answer
    x = 536,132.08

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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.