Home / 760,830.09-1,049,977.17-421,298.34

Finding the Fourth Proportional to 760,830.09, 1,049,977.17 and 421,298.34

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Solution

The fourth proportional to 760,830.09, 1,049,977.17 and 421,298.34 is: 581,409.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,830.09 : 1,049,977.17 = 421,298.34 : x
  2. Step 2: Convert to fraction form
    760,830.09/1,049,977.17 = 421,298.34/x
  3. Step 3: Cross multiply
    760,830.09x = 1,049,977.17 × 421,298.34
  4. Step 4: Simplify right side
    760,830.09x = 442,353,638,758.90
  5. Step 5: Solve for x
    x = 442,353,638,758.90/760,830.09
  6. Step 6: Final answer
    x = 581,409.23

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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.