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Finding the Fourth Proportional to 485,615.70, 729,298.35 and 469,869.30

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Solution

The fourth proportional to 485,615.70, 729,298.35 and 469,869.30 is: 705,650.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,615.70 : 729,298.35 = 469,869.30 : x
  2. Step 2: Convert to fraction form
    485,615.70/729,298.35 = 469,869.30/x
  3. Step 3: Cross multiply
    485,615.70x = 729,298.35 × 469,869.30
  4. Step 4: Simplify right side
    485,615.70x = 342,674,905,205.66
  5. Step 5: Solve for x
    x = 342,674,905,205.66/485,615.70
  6. Step 6: Final answer
    x = 705,650.38

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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.