Home / 760,838.32-1,049,988.52-421,306.56

Finding the Fourth Proportional to 760,838.32, 1,049,988.52 and 421,306.56

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Solution

The fourth proportional to 760,838.32, 1,049,988.52 and 421,306.56 is: 581,420.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,838.32 : 1,049,988.52 = 421,306.56 : x
  2. Step 2: Convert to fraction form
    760,838.32/1,049,988.52 = 421,306.56/x
  3. Step 3: Cross multiply
    760,838.32x = 1,049,988.52 × 421,306.56
  4. Step 4: Simplify right side
    760,838.32x = 442,367,051,400.69
  5. Step 5: Solve for x
    x = 442,367,051,400.69/760,838.32
  6. Step 6: Final answer
    x = 581,420.57

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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.