Home / 729,347.76-1,006,550.40-407,120.58

Finding the Fourth Proportional to 729,347.76, 1,006,550.40 and 407,120.58

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Solution

The fourth proportional to 729,347.76, 1,006,550.40 and 407,120.58 is: 561,854.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,347.76 : 1,006,550.40 = 407,120.58 : x
  2. Step 2: Convert to fraction form
    729,347.76/1,006,550.40 = 407,120.58/x
  3. Step 3: Cross multiply
    729,347.76x = 1,006,550.40 × 407,120.58
  4. Step 4: Simplify right side
    729,347.76x = 409,787,382,647.23
  5. Step 5: Solve for x
    x = 409,787,382,647.23/729,347.76
  6. Step 6: Final answer
    x = 561,854.58

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Double scale
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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.