Home / 760,840.96-1,049,959.68-421,309.20

Finding the Fourth Proportional to 760,840.96, 1,049,959.68 and 421,309.20

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Solution

The fourth proportional to 760,840.96, 1,049,959.68 and 421,309.20 is: 581,406.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,840.96 : 1,049,959.68 = 421,309.20 : x
  2. Step 2: Convert to fraction form
    760,840.96/1,049,959.68 = 421,309.20/x
  3. Step 3: Cross multiply
    760,840.96x = 1,049,959.68 × 421,309.20
  4. Step 4: Simplify right side
    760,840.96x = 442,357,672,813.06
  5. Step 5: Solve for x
    x = 442,357,672,813.06/760,840.96
  6. Step 6: Final answer
    x = 581,406.23

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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.