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Finding the Fourth Proportional to 497,425.59, 685,959.65 and 315,822.24

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Solution

The fourth proportional to 497,425.59, 685,959.65 and 315,822.24 is: 435,525.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,425.59 : 685,959.65 = 315,822.24 : x
  2. Step 2: Convert to fraction form
    497,425.59/685,959.65 = 315,822.24/x
  3. Step 3: Cross multiply
    497,425.59x = 685,959.65 × 315,822.24
  4. Step 4: Simplify right side
    497,425.59x = 216,641,312,817.84
  5. Step 5: Solve for x
    x = 216,641,312,817.84/497,425.59
  6. Step 6: Final answer
    x = 435,525.07

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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.