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Finding the Fourth Proportional to 506,790.96, 699,386.04 and 280,457.52

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Solution

The fourth proportional to 506,790.96, 699,386.04 and 280,457.52 is: 387,039.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,790.96 : 699,386.04 = 280,457.52 : x
  2. Step 2: Convert to fraction form
    506,790.96/699,386.04 = 280,457.52/x
  3. Step 3: Cross multiply
    506,790.96x = 699,386.04 × 280,457.52
  4. Step 4: Simplify right side
    506,790.96x = 196,148,074,301.02
  5. Step 5: Solve for x
    x = 196,148,074,301.02/506,790.96
  6. Step 6: Final answer
    x = 387,039.41

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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.