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Finding the Fourth Proportional to 555,746.82, 766,507.43 and 478,354.18

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Solution

The fourth proportional to 555,746.82, 766,507.43 and 478,354.18 is: 659,764.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,746.82 : 766,507.43 = 478,354.18 : x
  2. Step 2: Convert to fraction form
    555,746.82/766,507.43 = 478,354.18/x
  3. Step 3: Cross multiply
    555,746.82x = 766,507.43 × 478,354.18
  4. Step 4: Simplify right side
    555,746.82x = 366,662,026,917.25
  5. Step 5: Solve for x
    x = 366,662,026,917.25/555,746.82
  6. Step 6: Final answer
    x = 659,764.51

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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.