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Finding the Fourth Proportional to 556,955.21, 768,586.38 and 302,306.40

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Solution

The fourth proportional to 556,955.21, 768,586.38 and 302,306.40 is: 417,176.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,955.21 : 768,586.38 = 302,306.40 : x
  2. Step 2: Convert to fraction form
    556,955.21/768,586.38 = 302,306.40/x
  3. Step 3: Cross multiply
    556,955.21x = 768,586.38 × 302,306.40
  4. Step 4: Simplify right side
    556,955.21x = 232,348,581,626.83
  5. Step 5: Solve for x
    x = 232,348,581,626.83/556,955.21
  6. Step 6: Final answer
    x = 417,176.42

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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.