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Finding the Fourth Proportional to 430,901.40, 646,352.10 and 389,567.10

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Solution

The fourth proportional to 430,901.40, 646,352.10 and 389,567.10 is: 584,350.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,901.40 : 646,352.10 = 389,567.10 : x
  2. Step 2: Convert to fraction form
    430,901.40/646,352.10 = 389,567.10/x
  3. Step 3: Cross multiply
    430,901.40x = 646,352.10 × 389,567.10
  4. Step 4: Simplify right side
    430,901.40x = 251,797,513,175.91
  5. Step 5: Solve for x
    x = 251,797,513,175.91/430,901.40
  6. Step 6: Final answer
    x = 584,350.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.