Home / 530,450.05-732,040.38-288,720.94

Finding the Fourth Proportional to 530,450.05, 732,040.38 and 288,720.94

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Solution

The fourth proportional to 530,450.05, 732,040.38 and 288,720.94 is: 398,445.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,450.05 : 732,040.38 = 288,720.94 : x
  2. Step 2: Convert to fraction form
    530,450.05/732,040.38 = 288,720.94/x
  3. Step 3: Cross multiply
    530,450.05x = 732,040.38 × 288,720.94
  4. Step 4: Simplify right side
    530,450.05x = 211,355,386,631.56
  5. Step 5: Solve for x
    x = 211,355,386,631.56/530,450.05
  6. Step 6: Final answer
    x = 398,445.41

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1.5x scale

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.