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Finding the Fourth Proportional to 991,521, 1,368,415.62 and 589,113

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Solution

The fourth proportional to 991,521, 1,368,415.62 and 589,113 is: 813,045.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,521 : 1,368,415.62 = 589,113 : x
  2. Step 2: Convert to fraction form
    991,521/1,368,415.62 = 589,113/x
  3. Step 3: Cross multiply
    991,521x = 1,368,415.62 × 589,113
  4. Step 4: Simplify right side
    991,521x = 806,151,431,145.06
  5. Step 5: Solve for x
    x = 806,151,431,145.06/991,521
  6. Step 6: Final answer
    x = 813,045.24

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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.