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Finding the Fourth Proportional to 557,626.32, 769,531.32 and 302,981.76

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Solution

The fourth proportional to 557,626.32, 769,531.32 and 302,981.76 is: 418,118.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,626.32 : 769,531.32 = 302,981.76 : x
  2. Step 2: Convert to fraction form
    557,626.32/769,531.32 = 302,981.76/x
  3. Step 3: Cross multiply
    557,626.32x = 769,531.32 × 302,981.76
  4. Step 4: Simplify right side
    557,626.32x = 233,153,953,708.72
  5. Step 5: Solve for x
    x = 233,153,953,708.72/557,626.32
  6. Step 6: Final answer
    x = 418,118.63

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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.