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Finding the Fourth Proportional to 463,869.06, 640,128.48 and 272,894.76

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Solution

The fourth proportional to 463,869.06, 640,128.48 and 272,894.76 is: 376,588.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,869.06 : 640,128.48 = 272,894.76 : x
  2. Step 2: Convert to fraction form
    463,869.06/640,128.48 = 272,894.76/x
  3. Step 3: Cross multiply
    463,869.06x = 640,128.48 × 272,894.76
  4. Step 4: Simplify right side
    463,869.06x = 174,687,707,918.77
  5. Step 5: Solve for x
    x = 174,687,707,918.77/463,869.06
  6. Step 6: Final answer
    x = 376,588.40

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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.