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Finding the Fourth Proportional to 530,520.45, 732,095.82 and 288,798

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Solution

The fourth proportional to 530,520.45, 732,095.82 and 288,798 is: 398,529.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,520.45 : 732,095.82 = 288,798 : x
  2. Step 2: Convert to fraction form
    530,520.45/732,095.82 = 288,798/x
  3. Step 3: Cross multiply
    530,520.45x = 732,095.82 × 288,798
  4. Step 4: Simplify right side
    530,520.45x = 211,427,808,624.36
  5. Step 5: Solve for x
    x = 211,427,808,624.36/530,520.45
  6. Step 6: Final answer
    x = 398,529.05

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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.