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Finding the Fourth Proportional to 557,338.32, 769,110.66 and 315,619.20

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Solution

The fourth proportional to 557,338.32, 769,110.66 and 315,619.20 is: 435,545.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,338.32 : 769,110.66 = 315,619.20 : x
  2. Step 2: Convert to fraction form
    557,338.32/769,110.66 = 315,619.20/x
  3. Step 3: Cross multiply
    557,338.32x = 769,110.66 × 315,619.20
  4. Step 4: Simplify right side
    557,338.32x = 242,746,091,220.67
  5. Step 5: Solve for x
    x = 242,746,091,220.67/557,338.32
  6. Step 6: Final answer
    x = 435,545.31

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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.