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Finding the Fourth Proportional to 602,649.40, 831,653.56 and 330,721.72

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Solution

The fourth proportional to 602,649.40, 831,653.56 and 330,721.72 is: 456,394.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,649.40 : 831,653.56 = 330,721.72 : x
  2. Step 2: Convert to fraction form
    602,649.40/831,653.56 = 330,721.72/x
  3. Step 3: Cross multiply
    602,649.40x = 831,653.56 × 330,721.72
  4. Step 4: Simplify right side
    602,649.40x = 275,045,895,807.32
  5. Step 5: Solve for x
    x = 275,045,895,807.32/602,649.40
  6. Step 6: Final answer
    x = 456,394.54

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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.