Home / 538,031.72-742,459.84-308,424.40

Finding the Fourth Proportional to 538,031.72, 742,459.84 and 308,424.40

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Solution

The fourth proportional to 538,031.72, 742,459.84 and 308,424.40 is: 425,611.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,031.72 : 742,459.84 = 308,424.40 : x
  2. Step 2: Convert to fraction form
    538,031.72/742,459.84 = 308,424.40/x
  3. Step 3: Cross multiply
    538,031.72x = 742,459.84 × 308,424.40
  4. Step 4: Simplify right side
    538,031.72x = 228,992,728,048.89
  5. Step 5: Solve for x
    x = 228,992,728,048.89/538,031.72
  6. Step 6: Final answer
    x = 425,611.95

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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.