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Finding the Fourth Proportional to 875,461, 1,313,191.50 and 210,613

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Solution

The fourth proportional to 875,461, 1,313,191.50 and 210,613 is: 315,919.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,461 : 1,313,191.50 = 210,613 : x
  2. Step 2: Convert to fraction form
    875,461/1,313,191.50 = 210,613/x
  3. Step 3: Cross multiply
    875,461x = 1,313,191.50 × 210,613
  4. Step 4: Simplify right side
    875,461x = 276,575,201,389.50
  5. Step 5: Solve for x
    x = 276,575,201,389.50/875,461
  6. Step 6: Final answer
    x = 315,919.50

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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.