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Finding the Fourth Proportional to 645,647.14, 890,462.46 and 573,103

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Solution

The fourth proportional to 645,647.14, 890,462.46 and 573,103 is: 790,411.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,647.14 : 890,462.46 = 573,103 : x
  2. Step 2: Convert to fraction form
    645,647.14/890,462.46 = 573,103/x
  3. Step 3: Cross multiply
    645,647.14x = 890,462.46 × 573,103
  4. Step 4: Simplify right side
    645,647.14x = 510,326,707,213.38
  5. Step 5: Solve for x
    x = 510,326,707,213.38/645,647.14
  6. Step 6: Final answer
    x = 790,411.16

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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.