Home / 497,428.09-685,963.10-315,824.74

Finding the Fourth Proportional to 497,428.09, 685,963.10 and 315,824.74

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Solution

The fourth proportional to 497,428.09, 685,963.10 and 315,824.74 is: 435,528.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,428.09 : 685,963.10 = 315,824.74 : x
  2. Step 2: Convert to fraction form
    497,428.09/685,963.10 = 315,824.74/x
  3. Step 3: Cross multiply
    497,428.09x = 685,963.10 × 315,824.74
  4. Step 4: Simplify right side
    497,428.09x = 216,644,117,707.09
  5. Step 5: Solve for x
    x = 216,644,117,707.09/497,428.09
  6. Step 6: Final answer
    x = 435,528.52

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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.