Home / 571,116.24-788,123.19-312,990.03

Finding the Fourth Proportional to 571,116.24, 788,123.19 and 312,990.03

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Solution

The fourth proportional to 571,116.24, 788,123.19 and 312,990.03 is: 431,916.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,116.24 : 788,123.19 = 312,990.03 : x
  2. Step 2: Convert to fraction form
    571,116.24/788,123.19 = 312,990.03/x
  3. Step 3: Cross multiply
    571,116.24x = 788,123.19 × 312,990.03
  4. Step 4: Simplify right side
    571,116.24x = 246,674,700,881.80
  5. Step 5: Solve for x
    x = 246,674,700,881.80/571,116.24
  6. Step 6: Final answer
    x = 431,916.80

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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.