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Finding the Fourth Proportional to 539,117.10, 808,675.65 and 486,629.10

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Solution

The fourth proportional to 539,117.10, 808,675.65 and 486,629.10 is: 729,943.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,117.10 : 808,675.65 = 486,629.10 : x
  2. Step 2: Convert to fraction form
    539,117.10/808,675.65 = 486,629.10/x
  3. Step 3: Cross multiply
    539,117.10x = 808,675.65 × 486,629.10
  4. Step 4: Simplify right side
    539,117.10x = 393,525,103,751.42
  5. Step 5: Solve for x
    x = 393,525,103,751.42/539,117.10
  6. Step 6: Final answer
    x = 729,943.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.