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Finding the Fourth Proportional to 684,643.72, 1,026,989 and 235,360.76

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Solution

The fourth proportional to 684,643.72, 1,026,989 and 235,360.76 is: 353,049.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,643.72 : 1,026,989 = 235,360.76 : x
  2. Step 2: Convert to fraction form
    684,643.72/1,026,989 = 235,360.76/x
  3. Step 3: Cross multiply
    684,643.72x = 1,026,989 × 235,360.76
  4. Step 4: Simplify right side
    684,643.72x = 241,712,911,551.64
  5. Step 5: Solve for x
    x = 241,712,911,551.64/684,643.72
  6. Step 6: Final answer
    x = 353,049.19

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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.