Home / 760,814.83-1,049,911.63-421,275.79

Finding the Fourth Proportional to 760,814.83, 1,049,911.63 and 421,275.79

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Solution

The fourth proportional to 760,814.83, 1,049,911.63 and 421,275.79 is: 581,353.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,814.83 : 1,049,911.63 = 421,275.79 : x
  2. Step 2: Convert to fraction form
    760,814.83/1,049,911.63 = 421,275.79/x
  3. Step 3: Cross multiply
    760,814.83x = 1,049,911.63 × 421,275.79
  4. Step 4: Simplify right side
    760,814.83x = 442,302,351,358.44
  5. Step 5: Solve for x
    x = 442,302,351,358.44/760,814.83
  6. Step 6: Final answer
    x = 581,353.48

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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.