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Finding the Fourth Proportional to 702,962.45, 970,088.70 and 380,672.90

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Solution

The fourth proportional to 702,962.45, 970,088.70 and 380,672.90 is: 525,328.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,962.45 : 970,088.70 = 380,672.90 : x
  2. Step 2: Convert to fraction form
    702,962.45/970,088.70 = 380,672.90/x
  3. Step 3: Cross multiply
    702,962.45x = 970,088.70 × 380,672.90
  4. Step 4: Simplify right side
    702,962.45x = 369,286,473,835.79
  5. Step 5: Solve for x
    x = 369,286,473,835.79/702,962.45
  6. Step 6: Final answer
    x = 525,328.88

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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.