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Finding the Fourth Proportional to 639,624.60, 960,051.30 and 324,437.40

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Solution

The fourth proportional to 639,624.60, 960,051.30 and 324,437.40 is: 486,967.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,624.60 : 960,051.30 = 324,437.40 : x
  2. Step 2: Convert to fraction form
    639,624.60/960,051.30 = 324,437.40/x
  3. Step 3: Cross multiply
    639,624.60x = 960,051.30 × 324,437.40
  4. Step 4: Simplify right side
    639,624.60x = 311,476,547,638.62
  5. Step 5: Solve for x
    x = 311,476,547,638.62/639,624.60
  6. Step 6: Final answer
    x = 486,967.74

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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.