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Finding the Fourth Proportional to 487,420.49, 730,632.24 and 187,783.67

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Solution

The fourth proportional to 487,420.49, 730,632.24 and 187,783.67 is: 281,483.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,420.49 : 730,632.24 = 187,783.67 : x
  2. Step 2: Convert to fraction form
    487,420.49/730,632.24 = 187,783.67/x
  3. Step 3: Cross multiply
    487,420.49x = 730,632.24 × 187,783.67
  4. Step 4: Simplify right side
    487,420.49x = 137,200,799,794.36
  5. Step 5: Solve for x
    x = 137,200,799,794.36/487,420.49
  6. Step 6: Final answer
    x = 281,483.45

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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.