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Finding the Fourth Proportional to 870,597.62, 1,201,424.70 and 488,624.40

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Solution

The fourth proportional to 870,597.62, 1,201,424.70 and 488,624.40 is: 674,301.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,597.62 : 1,201,424.70 = 488,624.40 : x
  2. Step 2: Convert to fraction form
    870,597.62/1,201,424.70 = 488,624.40/x
  3. Step 3: Cross multiply
    870,597.62x = 1,201,424.70 × 488,624.40
  4. Step 4: Simplify right side
    870,597.62x = 587,045,425,015.02
  5. Step 5: Solve for x
    x = 587,045,425,015.02/870,597.62
  6. Step 6: Final answer
    x = 674,301.67

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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.