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Finding the Fourth Proportional to 1,333,923.72, 1,840,643.14 and 760,929.64

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Solution

The fourth proportional to 1,333,923.72, 1,840,643.14 and 760,929.64 is: 1,049,985.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,333,923.72 : 1,840,643.14 = 760,929.64 : x
  2. Step 2: Convert to fraction form
    1,333,923.72/1,840,643.14 = 760,929.64/x
  3. Step 3: Cross multiply
    1,333,923.72x = 1,840,643.14 × 760,929.64
  4. Step 4: Simplify right side
    1,333,923.72x = 1,400,599,921,888.67
  5. Step 5: Solve for x
    x = 1,400,599,921,888.67/1,333,923.72
  6. Step 6: Final answer
    x = 1,049,985.02

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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.