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Finding the Fourth Proportional to 672,062.58, 926,823.39 and 490,486.90

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Solution

The fourth proportional to 672,062.58, 926,823.39 and 490,486.90 is: 676,417.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,062.58 : 926,823.39 = 490,486.90 : x
  2. Step 2: Convert to fraction form
    672,062.58/926,823.39 = 490,486.90/x
  3. Step 3: Cross multiply
    672,062.58x = 926,823.39 × 490,486.90
  4. Step 4: Simplify right side
    672,062.58x = 454,594,731,408.59
  5. Step 5: Solve for x
    x = 454,594,731,408.59/672,062.58
  6. Step 6: Final answer
    x = 676,417.26

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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.