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Finding the Fourth Proportional to 644,317.29, 889,228.35 and 368,700.60

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Solution

The fourth proportional to 644,317.29, 889,228.35 and 368,700.60 is: 508,847.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,317.29 : 889,228.35 = 368,700.60 : x
  2. Step 2: Convert to fraction form
    644,317.29/889,228.35 = 368,700.60/x
  3. Step 3: Cross multiply
    644,317.29x = 889,228.35 × 368,700.60
  4. Step 4: Simplify right side
    644,317.29x = 327,859,026,182.01
  5. Step 5: Solve for x
    x = 327,859,026,182.01/644,317.29
  6. Step 6: Final answer
    x = 508,847.16

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1.5x scale

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.