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Finding the Fourth Proportional to 531,689.67, 733,316.90 and 340,720.83

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Solution

The fourth proportional to 531,689.67, 733,316.90 and 340,720.83 is: 469,928.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,689.67 : 733,316.90 = 340,720.83 : x
  2. Step 2: Convert to fraction form
    531,689.67/733,316.90 = 340,720.83/x
  3. Step 3: Cross multiply
    531,689.67x = 733,316.90 × 340,720.83
  4. Step 4: Simplify right side
    531,689.67x = 249,856,341,117.42
  5. Step 5: Solve for x
    x = 249,856,341,117.42/531,689.67
  6. Step 6: Final answer
    x = 469,928.90

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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.