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Finding the Fourth Proportional to 530,737.60, 732,400.50 and 289,018.30

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Solution

The fourth proportional to 530,737.60, 732,400.50 and 289,018.30 is: 398,835.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,737.60 : 732,400.50 = 289,018.30 : x
  2. Step 2: Convert to fraction form
    530,737.60/732,400.50 = 289,018.30/x
  3. Step 3: Cross multiply
    530,737.60x = 732,400.50 × 289,018.30
  4. Step 4: Simplify right side
    530,737.60x = 211,677,147,429.15
  5. Step 5: Solve for x
    x = 211,677,147,429.15/530,737.60
  6. Step 6: Final answer
    x = 398,835.79

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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.