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Finding the Fourth Proportional to 904,136, 1,247,746.56 and 501,728

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Solution

The fourth proportional to 904,136, 1,247,746.56 and 501,728 is: 692,406.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    904,136 : 1,247,746.56 = 501,728 : x
  2. Step 2: Convert to fraction form
    904,136/1,247,746.56 = 501,728/x
  3. Step 3: Cross multiply
    904,136x = 1,247,746.56 × 501,728
  4. Step 4: Simplify right side
    904,136x = 626,029,386,055.68
  5. Step 5: Solve for x
    x = 626,029,386,055.68/904,136
  6. Step 6: Final answer
    x = 692,406.22

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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.