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Finding the Fourth Proportional to 567,478.76, 783,123.06 and 312,824.36

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Solution

The fourth proportional to 567,478.76, 783,123.06 and 312,824.36 is: 431,698.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,478.76 : 783,123.06 = 312,824.36 : x
  2. Step 2: Convert to fraction form
    567,478.76/783,123.06 = 312,824.36/x
  3. Step 3: Cross multiply
    567,478.76x = 783,123.06 × 312,824.36
  4. Step 4: Simplify right side
    567,478.76x = 244,979,970,045.74
  5. Step 5: Solve for x
    x = 244,979,970,045.74/567,478.76
  6. Step 6: Final answer
    x = 431,698.92

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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.