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Finding the Fourth Proportional to 760,662, 1,141,386.48 and 386,685.36

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Solution

The fourth proportional to 760,662, 1,141,386.48 and 386,685.36 is: 580,228.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,662 : 1,141,386.48 = 386,685.36 : x
  2. Step 2: Convert to fraction form
    760,662/1,141,386.48 = 386,685.36/x
  3. Step 3: Cross multiply
    760,662x = 1,141,386.48 × 386,685.36
  4. Step 4: Simplify right side
    760,662x = 441,357,441,917.93
  5. Step 5: Solve for x
    x = 441,357,441,917.93/760,662
  6. Step 6: Final answer
    x = 580,228.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.