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Finding the Fourth Proportional to 557,516.40, 769,373.55 and 302,867.79

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Solution

The fourth proportional to 557,516.40, 769,373.55 and 302,867.79 is: 417,958.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,516.40 : 769,373.55 = 302,867.79 : x
  2. Step 2: Convert to fraction form
    557,516.40/769,373.55 = 302,867.79/x
  3. Step 3: Cross multiply
    557,516.40x = 769,373.55 × 302,867.79
  4. Step 4: Simplify right side
    557,516.40x = 233,018,466,772.96
  5. Step 5: Solve for x
    x = 233,018,466,772.96/557,516.40
  6. Step 6: Final answer
    x = 417,958.05

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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.