Home / 728,117.88-1,004,807.33-405,848.40

Finding the Fourth Proportional to 728,117.88, 1,004,807.33 and 405,848.40

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Solution

The fourth proportional to 728,117.88, 1,004,807.33 and 405,848.40 is: 560,073.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,117.88 : 1,004,807.33 = 405,848.40 : x
  2. Step 2: Convert to fraction form
    728,117.88/1,004,807.33 = 405,848.40/x
  3. Step 3: Cross multiply
    728,117.88x = 1,004,807.33 × 405,848.40
  4. Step 4: Simplify right side
    728,117.88x = 407,799,445,159.53
  5. Step 5: Solve for x
    x = 407,799,445,159.53/728,117.88
  6. Step 6: Final answer
    x = 560,073.38

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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.