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Finding the Fourth Proportional to 571,955.51, 788,970.67 and 356,721.91

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Solution

The fourth proportional to 571,955.51, 788,970.67 and 356,721.91 is: 492,071.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,955.51 : 788,970.67 = 356,721.91 : x
  2. Step 2: Convert to fraction form
    571,955.51/788,970.67 = 356,721.91/x
  3. Step 3: Cross multiply
    571,955.51x = 788,970.67 × 356,721.91
  4. Step 4: Simplify right side
    571,955.51x = 281,443,121,472.15
  5. Step 5: Solve for x
    x = 281,443,121,472.15/571,955.51
  6. Step 6: Final answer
    x = 492,071.70

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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.