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Finding the Fourth Proportional to 644,588.32, 889,547.72 and 354,197.52

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Solution

The fourth proportional to 644,588.32, 889,547.72 and 354,197.52 is: 488,801.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,588.32 : 889,547.72 = 354,197.52 : x
  2. Step 2: Convert to fraction form
    644,588.32/889,547.72 = 354,197.52/x
  3. Step 3: Cross multiply
    644,588.32x = 889,547.72 × 354,197.52
  4. Step 4: Simplify right side
    644,588.32x = 315,075,596,345.65
  5. Step 5: Solve for x
    x = 315,075,596,345.65/644,588.32
  6. Step 6: Final answer
    x = 488,801.28

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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.