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Finding the Fourth Proportional to 646,652.78, 892,381.10 and 374,878.24

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Solution

The fourth proportional to 646,652.78, 892,381.10 and 374,878.24 is: 517,332.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,652.78 : 892,381.10 = 374,878.24 : x
  2. Step 2: Convert to fraction form
    646,652.78/892,381.10 = 374,878.24/x
  3. Step 3: Cross multiply
    646,652.78x = 892,381.10 × 374,878.24
  4. Step 4: Simplify right side
    646,652.78x = 334,534,256,177.26
  5. Step 5: Solve for x
    x = 334,534,256,177.26/646,652.78
  6. Step 6: Final answer
    x = 517,332.12

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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.