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Finding the Fourth Proportional to 657,878.18, 907,879.32 and 385,950.71

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Solution

The fourth proportional to 657,878.18, 907,879.32 and 385,950.71 is: 532,616.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,878.18 : 907,879.32 = 385,950.71 : x
  2. Step 2: Convert to fraction form
    657,878.18/907,879.32 = 385,950.71/x
  3. Step 3: Cross multiply
    657,878.18x = 907,879.32 × 385,950.71
  4. Step 4: Simplify right side
    657,878.18x = 350,396,668,148.32
  5. Step 5: Solve for x
    x = 350,396,668,148.32/657,878.18
  6. Step 6: Final answer
    x = 532,616.34

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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.