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Finding the Fourth Proportional to 889,607.40, 1,334,411.10 and 328,525.80

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Solution

The fourth proportional to 889,607.40, 1,334,411.10 and 328,525.80 is: 492,788.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,607.40 : 1,334,411.10 = 328,525.80 : x
  2. Step 2: Convert to fraction form
    889,607.40/1,334,411.10 = 328,525.80/x
  3. Step 3: Cross multiply
    889,607.40x = 1,334,411.10 × 328,525.80
  4. Step 4: Simplify right side
    889,607.40x = 438,388,474,156.38
  5. Step 5: Solve for x
    x = 438,388,474,156.38/889,607.40
  6. Step 6: Final answer
    x = 492,788.70

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.