Home / 760,835.80-1,049,985.06-421,304.05

Finding the Fourth Proportional to 760,835.80, 1,049,985.06 and 421,304.05

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Solution

The fourth proportional to 760,835.80, 1,049,985.06 and 421,304.05 is: 581,417.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,835.80 : 1,049,985.06 = 421,304.05 : x
  2. Step 2: Convert to fraction form
    760,835.80/1,049,985.06 = 421,304.05/x
  3. Step 3: Cross multiply
    760,835.80x = 1,049,985.06 × 421,304.05
  4. Step 4: Simplify right side
    760,835.80x = 442,362,958,217.49
  5. Step 5: Solve for x
    x = 442,362,958,217.49/760,835.80
  6. Step 6: Final answer
    x = 581,417.12

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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.