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Finding the Fourth Proportional to 506,680.81, 699,122.40 and 288,885.37

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Solution

The fourth proportional to 506,680.81, 699,122.40 and 288,885.37 is: 398,606.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,680.81 : 699,122.40 = 288,885.37 : x
  2. Step 2: Convert to fraction form
    506,680.81/699,122.40 = 288,885.37/x
  3. Step 3: Cross multiply
    506,680.81x = 699,122.40 × 288,885.37
  4. Step 4: Simplify right side
    506,680.81x = 201,966,233,199.29
  5. Step 5: Solve for x
    x = 201,966,233,199.29/506,680.81
  6. Step 6: Final answer
    x = 398,606.44

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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.