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Finding the Fourth Proportional to 669,721.09, 924,222 and 363,803.40

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Solution

The fourth proportional to 669,721.09, 924,222 and 363,803.40 is: 502,052.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,721.09 : 924,222 = 363,803.40 : x
  2. Step 2: Convert to fraction form
    669,721.09/924,222 = 363,803.40/x
  3. Step 3: Cross multiply
    669,721.09x = 924,222 × 363,803.40
  4. Step 4: Simplify right side
    669,721.09x = 336,235,105,954.80
  5. Step 5: Solve for x
    x = 336,235,105,954.80/669,721.09
  6. Step 6: Final answer
    x = 502,052.44

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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.