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Finding the Fourth Proportional to 557,332.45, 769,123.30 and 302,685.46

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Solution

The fourth proportional to 557,332.45, 769,123.30 and 302,685.46 is: 417,708.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,332.45 : 769,123.30 = 302,685.46 : x
  2. Step 2: Convert to fraction form
    557,332.45/769,123.30 = 302,685.46/x
  3. Step 3: Cross multiply
    557,332.45x = 769,123.30 × 302,685.46
  4. Step 4: Simplify right side
    557,332.45x = 232,802,438,343.79
  5. Step 5: Solve for x
    x = 232,802,438,343.79/557,332.45
  6. Step 6: Final answer
    x = 417,708.39

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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.