Home / 621,472.74-857,631.15-349,536.30

Finding the Fourth Proportional to 621,472.74, 857,631.15 and 349,536.30

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Solution

The fourth proportional to 621,472.74, 857,631.15 and 349,536.30 is: 482,359.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,472.74 : 857,631.15 = 349,536.30 : x
  2. Step 2: Convert to fraction form
    621,472.74/857,631.15 = 349,536.30/x
  3. Step 3: Cross multiply
    621,472.74x = 857,631.15 × 349,536.30
  4. Step 4: Simplify right side
    621,472.74x = 299,773,218,935.75
  5. Step 5: Solve for x
    x = 299,773,218,935.75/621,472.74
  6. Step 6: Final answer
    x = 482,359.40

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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.