Home / 761,611.11-1,051,139.10-486,087.90

Finding the Fourth Proportional to 761,611.11, 1,051,139.10 and 486,087.90

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Solution

The fourth proportional to 761,611.11, 1,051,139.10 and 486,087.90 is: 670,875.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,611.11 : 1,051,139.10 = 486,087.90 : x
  2. Step 2: Convert to fraction form
    761,611.11/1,051,139.10 = 486,087.90/x
  3. Step 3: Cross multiply
    761,611.11x = 1,051,139.10 × 486,087.90
  4. Step 4: Simplify right side
    761,611.11x = 510,945,997,726.89
  5. Step 5: Solve for x
    x = 510,945,997,726.89/761,611.11
  6. Step 6: Final answer
    x = 670,875.19

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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.