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Finding the Fourth Proportional to 540,672.28, 811,457.70 and 288,228.76

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Solution

The fourth proportional to 540,672.28, 811,457.70 and 288,228.76 is: 432,582.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,672.28 : 811,457.70 = 288,228.76 : x
  2. Step 2: Convert to fraction form
    540,672.28/811,457.70 = 288,228.76/x
  3. Step 3: Cross multiply
    540,672.28x = 811,457.70 × 288,228.76
  4. Step 4: Simplify right side
    540,672.28x = 233,885,446,663.45
  5. Step 5: Solve for x
    x = 233,885,446,663.45/540,672.28
  6. Step 6: Final answer
    x = 432,582.65

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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.