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Finding the Fourth Proportional to 839,310, 1,258,068.48 and 478,704.36

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Solution

The fourth proportional to 839,310, 1,258,068.48 and 478,704.36 is: 717,545.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,310 : 1,258,068.48 = 478,704.36 : x
  2. Step 2: Convert to fraction form
    839,310/1,258,068.48 = 478,704.36/x
  3. Step 3: Cross multiply
    839,310x = 1,258,068.48 × 478,704.36
  4. Step 4: Simplify right side
    839,310x = 602,242,866,554.57
  5. Step 5: Solve for x
    x = 602,242,866,554.57/839,310
  6. Step 6: Final answer
    x = 717,545.21

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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.