Home / 760,836.09-1,049,985.45-421,304.34

Finding the Fourth Proportional to 760,836.09, 1,049,985.45 and 421,304.34

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Solution

The fourth proportional to 760,836.09, 1,049,985.45 and 421,304.34 is: 581,417.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,836.09 : 1,049,985.45 = 421,304.34 : x
  2. Step 2: Convert to fraction form
    760,836.09/1,049,985.45 = 421,304.34/x
  3. Step 3: Cross multiply
    760,836.09x = 1,049,985.45 × 421,304.34
  4. Step 4: Simplify right side
    760,836.09x = 442,363,427,021.85
  5. Step 5: Solve for x
    x = 442,363,427,021.85/760,836.09
  6. Step 6: Final answer
    x = 581,417.51

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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.