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Finding the Fourth Proportional to 602,390.59, 831,305.36 and 330,459.01

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Solution

The fourth proportional to 602,390.59, 831,305.36 and 330,459.01 is: 456,036.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,390.59 : 831,305.36 = 330,459.01 : x
  2. Step 2: Convert to fraction form
    602,390.59/831,305.36 = 330,459.01/x
  3. Step 3: Cross multiply
    602,390.59x = 831,305.36 × 330,459.01
  4. Step 4: Simplify right side
    602,390.59x = 274,712,345,021.18
  5. Step 5: Solve for x
    x = 274,712,345,021.18/602,390.59
  6. Step 6: Final answer
    x = 456,036.91

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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.