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Finding the Fourth Proportional to 610,412.55, 915,618.83 and 278,636.55

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Solution

The fourth proportional to 610,412.55, 915,618.83 and 278,636.55 is: 417,954.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,412.55 : 915,618.83 = 278,636.55 : x
  2. Step 2: Convert to fraction form
    610,412.55/915,618.83 = 278,636.55/x
  3. Step 3: Cross multiply
    610,412.55x = 915,618.83 × 278,636.55
  4. Step 4: Simplify right side
    610,412.55x = 255,124,870,513.05
  5. Step 5: Solve for x
    x = 255,124,870,513.05/610,412.55
  6. Step 6: Final answer
    x = 417,954.83

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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.