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Finding the Fourth Proportional to 480,715.20, 720,854.10 and 256,017.96

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Solution

The fourth proportional to 480,715.20, 720,854.10 and 256,017.96 is: 383,910.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,715.20 : 720,854.10 = 256,017.96 : x
  2. Step 2: Convert to fraction form
    480,715.20/720,854.10 = 256,017.96/x
  3. Step 3: Cross multiply
    480,715.20x = 720,854.10 × 256,017.96
  4. Step 4: Simplify right side
    480,715.20x = 184,551,596,139.64
  5. Step 5: Solve for x
    x = 184,551,596,139.64/480,715.20
  6. Step 6: Final answer
    x = 383,910.47

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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.