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Finding the Fourth Proportional to 530,741.62, 732,437.40 and 289,034.38

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Solution

The fourth proportional to 530,741.62, 732,437.40 and 289,034.38 is: 398,875.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,741.62 : 732,437.40 = 289,034.38 : x
  2. Step 2: Convert to fraction form
    530,741.62/732,437.40 = 289,034.38/x
  3. Step 3: Cross multiply
    530,741.62x = 732,437.40 × 289,034.38
  4. Step 4: Simplify right side
    530,741.62x = 211,699,589,797.81
  5. Step 5: Solve for x
    x = 211,699,589,797.81/530,741.62
  6. Step 6: Final answer
    x = 398,875.05

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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.