Home / 528,933,199.73-729,884,428.57-311,389,725.87

Finding the Fourth Proportional to 528,933,199.73, 729,884,428.57 and 311,389,725.87

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Solution

The fourth proportional to 528,933,199.73, 729,884,428.57 and 311,389,725.87 is: 429,692,279.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,933,199.73 : 729,884,428.57 = 311,389,725.87 : x
  2. Step 2: Convert to fraction form
    528,933,199.73/729,884,428.57 = 311,389,725.87/x
  3. Step 3: Cross multiply
    528,933,199.73x = 729,884,428.57 × 311,389,725.87
  4. Step 4: Simplify right side
    528,933,199.73x = 227,278,512,126,495,712
  5. Step 5: Solve for x
    x = 227,278,512,126,495,712/528,933,199.73
  6. Step 6: Final answer
    x = 429,692,279.18

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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.