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Finding the Fourth Proportional to 610,421.70, 915,632.55 and 492,323.70

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Solution

The fourth proportional to 610,421.70, 915,632.55 and 492,323.70 is: 738,485.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,421.70 : 915,632.55 = 492,323.70 : x
  2. Step 2: Convert to fraction form
    610,421.70/915,632.55 = 492,323.70/x
  3. Step 3: Cross multiply
    610,421.70x = 915,632.55 × 492,323.70
  4. Step 4: Simplify right side
    610,421.70x = 450,787,604,856.44
  5. Step 5: Solve for x
    x = 450,787,604,856.44/610,421.70
  6. Step 6: Final answer
    x = 738,485.55

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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.