Home / 761,655.12-1,051,562.04-490,194.72

Finding the Fourth Proportional to 761,655.12, 1,051,562.04 and 490,194.72

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Solution

The fourth proportional to 761,655.12, 1,051,562.04 and 490,194.72 is: 676,776.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,655.12 : 1,051,562.04 = 490,194.72 : x
  2. Step 2: Convert to fraction form
    761,655.12/1,051,562.04 = 490,194.72/x
  3. Step 3: Cross multiply
    761,655.12x = 1,051,562.04 × 490,194.72
  4. Step 4: Simplify right side
    761,655.12x = 515,470,159,760.43
  5. Step 5: Solve for x
    x = 515,470,159,760.43/761,655.12
  6. Step 6: Final answer
    x = 676,776.33

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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.