Home / 760,787.12-1,049,886.20-421,255.28

Finding the Fourth Proportional to 760,787.12, 1,049,886.20 and 421,255.28

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Solution

The fourth proportional to 760,787.12, 1,049,886.20 and 421,255.28 is: 581,332.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,787.12 : 1,049,886.20 = 421,255.28 : x
  2. Step 2: Convert to fraction form
    760,787.12/1,049,886.20 = 421,255.28/x
  3. Step 3: Cross multiply
    760,787.12x = 1,049,886.20 × 421,255.28
  4. Step 4: Simplify right side
    760,787.12x = 442,270,105,149.14
  5. Step 5: Solve for x
    x = 442,270,105,149.14/760,787.12
  6. Step 6: Final answer
    x = 581,332.27

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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.