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Finding the Fourth Proportional to 578,427.68, 863,704 and 510,392.72

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Solution

The fourth proportional to 578,427.68, 863,704 and 510,392.72 is: 762,114.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,427.68 : 863,704 = 510,392.72 : x
  2. Step 2: Convert to fraction form
    578,427.68/863,704 = 510,392.72/x
  3. Step 3: Cross multiply
    578,427.68x = 863,704 × 510,392.72
  4. Step 4: Simplify right side
    578,427.68x = 440,828,233,834.88
  5. Step 5: Solve for x
    x = 440,828,233,834.88/578,427.68
  6. Step 6: Final answer
    x = 762,114.69

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.