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Finding the Fourth Proportional to 530,491.54, 732,078.42 and 288,775.93

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Solution

The fourth proportional to 530,491.54, 732,078.42 and 288,775.93 is: 398,510.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,491.54 : 732,078.42 = 288,775.93 : x
  2. Step 2: Convert to fraction form
    530,491.54/732,078.42 = 288,775.93/x
  3. Step 3: Cross multiply
    530,491.54x = 732,078.42 × 288,775.93
  4. Step 4: Simplify right side
    530,491.54x = 211,406,628,149.37
  5. Step 5: Solve for x
    x = 211,406,628,149.37/530,491.54
  6. Step 6: Final answer
    x = 398,510.84

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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.