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Finding the Fourth Proportional to 530,437.22, 732,019.77 and 288,736.05

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Solution

The fourth proportional to 530,437.22, 732,019.77 and 288,736.05 is: 398,464.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,437.22 : 732,019.77 = 288,736.05 : x
  2. Step 2: Convert to fraction form
    530,437.22/732,019.77 = 288,736.05/x
  3. Step 3: Cross multiply
    530,437.22x = 732,019.77 × 288,736.05
  4. Step 4: Simplify right side
    530,437.22x = 211,360,496,911.71
  5. Step 5: Solve for x
    x = 211,360,496,911.71/530,437.22
  6. Step 6: Final answer
    x = 398,464.68

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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.