Home / 712,636.08-981,777.24-497,396.40

Finding the Fourth Proportional to 712,636.08, 981,777.24 and 497,396.40

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Solution

The fourth proportional to 712,636.08, 981,777.24 and 497,396.40 is: 685,248.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,636.08 : 981,777.24 = 497,396.40 : x
  2. Step 2: Convert to fraction form
    712,636.08/981,777.24 = 497,396.40/x
  3. Step 3: Cross multiply
    712,636.08x = 981,777.24 × 497,396.40
  4. Step 4: Simplify right side
    712,636.08x = 488,332,464,777.94
  5. Step 5: Solve for x
    x = 488,332,464,777.94/712,636.08
  6. Step 6: Final answer
    x = 685,248.02

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Double scale
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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.