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Finding the Fourth Proportional to 630,373.50, 869,915.43 and 404,019

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Solution

The fourth proportional to 630,373.50, 869,915.43 and 404,019 is: 557,546.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,373.50 : 869,915.43 = 404,019 : x
  2. Step 2: Convert to fraction form
    630,373.50/869,915.43 = 404,019/x
  3. Step 3: Cross multiply
    630,373.50x = 869,915.43 × 404,019
  4. Step 4: Simplify right side
    630,373.50x = 351,462,362,113.17
  5. Step 5: Solve for x
    x = 351,462,362,113.17/630,373.50
  6. Step 6: Final answer
    x = 557,546.22

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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.