Home / 423,821.12-585,391.20-316,866.56

Finding the Fourth Proportional to 423,821.12, 585,391.20 and 316,866.56

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Solution

The fourth proportional to 423,821.12, 585,391.20 and 316,866.56 is: 437,663.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,821.12 : 585,391.20 = 316,866.56 : x
  2. Step 2: Convert to fraction form
    423,821.12/585,391.20 = 316,866.56/x
  3. Step 3: Cross multiply
    423,821.12x = 585,391.20 × 316,866.56
  4. Step 4: Simplify right side
    423,821.12x = 185,490,895,798.27
  5. Step 5: Solve for x
    x = 185,490,895,798.27/423,821.12
  6. Step 6: Final answer
    x = 437,663.17

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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.