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Finding the Fourth Proportional to 539,494.80, 744,391.66 and 310,007.74

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Solution

The fourth proportional to 539,494.80, 744,391.66 and 310,007.74 is: 427,746.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,494.80 : 744,391.66 = 310,007.74 : x
  2. Step 2: Convert to fraction form
    539,494.80/744,391.66 = 310,007.74/x
  3. Step 3: Cross multiply
    539,494.80x = 744,391.66 × 310,007.74
  4. Step 4: Simplify right side
    539,494.80x = 230,767,176,191.45
  5. Step 5: Solve for x
    x = 230,767,176,191.45/539,494.80
  6. Step 6: Final answer
    x = 427,746.80

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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.