Home / 530,438.16-732,020.22-288,736.50

Finding the Fourth Proportional to 530,438.16, 732,020.22 and 288,736.50

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Solution

The fourth proportional to 530,438.16, 732,020.22 and 288,736.50 is: 398,464.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,438.16 : 732,020.22 = 288,736.50 : x
  2. Step 2: Convert to fraction form
    530,438.16/732,020.22 = 288,736.50/x
  3. Step 3: Cross multiply
    530,438.16x = 732,020.22 × 288,736.50
  4. Step 4: Simplify right side
    530,438.16x = 211,360,956,252.03
  5. Step 5: Solve for x
    x = 211,360,956,252.03/530,438.16
  6. Step 6: Final answer
    x = 398,464.84

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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.