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Finding the Fourth Proportional to 665,630.47, 999,331.45 and 350,308.81

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Solution

The fourth proportional to 665,630.47, 999,331.45 and 350,308.81 is: 525,929.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,630.47 : 999,331.45 = 350,308.81 : x
  2. Step 2: Convert to fraction form
    665,630.47/999,331.45 = 350,308.81/x
  3. Step 3: Cross multiply
    665,630.47x = 999,331.45 × 350,308.81
  4. Step 4: Simplify right side
    665,630.47x = 350,074,611,045.07
  5. Step 5: Solve for x
    x = 350,074,611,045.07/665,630.47
  6. Step 6: Final answer
    x = 525,929.37

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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.