Home / 760,838.40-1,049,803.20-421,243.20

Finding the Fourth Proportional to 760,838.40, 1,049,803.20 and 421,243.20

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Solution

The fourth proportional to 760,838.40, 1,049,803.20 and 421,243.20 is: 581,230.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,838.40 : 1,049,803.20 = 421,243.20 : x
  2. Step 2: Convert to fraction form
    760,838.40/1,049,803.20 = 421,243.20/x
  3. Step 3: Cross multiply
    760,838.40x = 1,049,803.20 × 421,243.20
  4. Step 4: Simplify right side
    760,838.40x = 442,222,459,338.24
  5. Step 5: Solve for x
    x = 442,222,459,338.24/760,838.40
  6. Step 6: Final answer
    x = 581,230.47

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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.