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Finding the Fourth Proportional to 611,376.40, 917,064.60 and 296,448.40

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Solution

The fourth proportional to 611,376.40, 917,064.60 and 296,448.40 is: 444,672.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,376.40 : 917,064.60 = 296,448.40 : x
  2. Step 2: Convert to fraction form
    611,376.40/917,064.60 = 296,448.40/x
  3. Step 3: Cross multiply
    611,376.40x = 917,064.60 × 296,448.40
  4. Step 4: Simplify right side
    611,376.40x = 271,862,333,366.64
  5. Step 5: Solve for x
    x = 271,862,333,366.64/611,376.40
  6. Step 6: Final answer
    x = 444,672.60

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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.