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Finding the Fourth Proportional to 874,478.88, 1,312,466 and 342,373.58

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Solution

The fourth proportional to 874,478.88, 1,312,466 and 342,373.58 is: 513,853.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,478.88 : 1,312,466 = 342,373.58 : x
  2. Step 2: Convert to fraction form
    874,478.88/1,312,466 = 342,373.58/x
  3. Step 3: Cross multiply
    874,478.88x = 1,312,466 × 342,373.58
  4. Step 4: Simplify right side
    874,478.88x = 449,353,683,048.28
  5. Step 5: Solve for x
    x = 449,353,683,048.28/874,478.88
  6. Step 6: Final answer
    x = 513,853.10

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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.