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Finding the Fourth Proportional to 685,547.30, 946,055.76 and 375,448.26

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Solution

The fourth proportional to 685,547.30, 946,055.76 and 375,448.26 is: 518,118.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,547.30 : 946,055.76 = 375,448.26 : x
  2. Step 2: Convert to fraction form
    685,547.30/946,055.76 = 375,448.26/x
  3. Step 3: Cross multiply
    685,547.30x = 946,055.76 × 375,448.26
  4. Step 4: Simplify right side
    685,547.30x = 355,194,988,954.98
  5. Step 5: Solve for x
    x = 355,194,988,954.98/685,547.30
  6. Step 6: Final answer
    x = 518,118.86

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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.