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Finding the Fourth Proportional to 530,707.05, 732,388.86 and 289,002.87

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Solution

The fourth proportional to 530,707.05, 732,388.86 and 289,002.87 is: 398,831.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,707.05 : 732,388.86 = 289,002.87 : x
  2. Step 2: Convert to fraction form
    530,707.05/732,388.86 = 289,002.87/x
  3. Step 3: Cross multiply
    530,707.05x = 732,388.86 × 289,002.87
  4. Step 4: Simplify right side
    530,707.05x = 211,662,482,496.03
  5. Step 5: Solve for x
    x = 211,662,482,496.03/530,707.05
  6. Step 6: Final answer
    x = 398,831.11

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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.