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Finding the Fourth Proportional to 644,574.16, 889,264.20 and 475,210.96

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Solution

The fourth proportional to 644,574.16, 889,264.20 and 475,210.96 is: 655,608.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,574.16 : 889,264.20 = 475,210.96 : x
  2. Step 2: Convert to fraction form
    644,574.16/889,264.20 = 475,210.96/x
  3. Step 3: Cross multiply
    644,574.16x = 889,264.20 × 475,210.96
  4. Step 4: Simplify right side
    644,574.16x = 422,588,094,175.63
  5. Step 5: Solve for x
    x = 422,588,094,175.63/644,574.16
  6. Step 6: Final answer
    x = 655,608.18

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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.