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Finding the Fourth Proportional to 498,778.63, 688,314.51 and 272,424.67

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Solution

The fourth proportional to 498,778.63, 688,314.51 and 272,424.67 is: 375,946.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,778.63 : 688,314.51 = 272,424.67 : x
  2. Step 2: Convert to fraction form
    498,778.63/688,314.51 = 272,424.67/x
  3. Step 3: Cross multiply
    498,778.63x = 688,314.51 × 272,424.67
  4. Step 4: Simplify right side
    498,778.63x = 187,513,848,439.27
  5. Step 5: Solve for x
    x = 187,513,848,439.27/498,778.63
  6. Step 6: Final answer
    x = 375,946.04

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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.