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Finding the Fourth Proportional to 760,763.07, 1,049,853.03 and 421,231.32

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Solution

The fourth proportional to 760,763.07, 1,049,853.03 and 421,231.32 is: 581,299.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,763.07 : 1,049,853.03 = 421,231.32 : x
  2. Step 2: Convert to fraction form
    760,763.07/1,049,853.03 = 421,231.32/x
  3. Step 3: Cross multiply
    760,763.07x = 1,049,853.03 × 421,231.32
  4. Step 4: Simplify right side
    760,763.07x = 442,230,977,632.90
  5. Step 5: Solve for x
    x = 442,230,977,632.90/760,763.07
  6. Step 6: Final answer
    x = 581,299.22

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1.5x scale

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.