Home / 760,689.86-1,049,822.43-421,158.11

Finding the Fourth Proportional to 760,689.86, 1,049,822.43 and 421,158.11

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Solution

The fourth proportional to 760,689.86, 1,049,822.43 and 421,158.11 is: 581,237.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,689.86 : 1,049,822.43 = 421,158.11 : x
  2. Step 2: Convert to fraction form
    760,689.86/1,049,822.43 = 421,158.11/x
  3. Step 3: Cross multiply
    760,689.86x = 1,049,822.43 × 421,158.11
  4. Step 4: Simplify right side
    760,689.86x = 442,141,231,900.22
  5. Step 5: Solve for x
    x = 442,141,231,900.22/760,689.86
  6. Step 6: Final answer
    x = 581,237.18

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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.