Home / 738,468.64-1,019,088.12-428,431.40

Finding the Fourth Proportional to 738,468.64, 1,019,088.12 and 428,431.40

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Solution

The fourth proportional to 738,468.64, 1,019,088.12 and 428,431.40 is: 591,236.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,468.64 : 1,019,088.12 = 428,431.40 : x
  2. Step 2: Convert to fraction form
    738,468.64/1,019,088.12 = 428,431.40/x
  3. Step 3: Cross multiply
    738,468.64x = 1,019,088.12 × 428,431.40
  4. Step 4: Simplify right side
    738,468.64x = 436,609,349,974.97
  5. Step 5: Solve for x
    x = 436,609,349,974.97/738,468.64
  6. Step 6: Final answer
    x = 591,236.14

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Double scale
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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.