Home / 631,045.04-870,835.74-389,230.88

Finding the Fourth Proportional to 631,045.04, 870,835.74 and 389,230.88

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Solution

The fourth proportional to 631,045.04, 870,835.74 and 389,230.88 is: 537,134.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,045.04 : 870,835.74 = 389,230.88 : x
  2. Step 2: Convert to fraction form
    631,045.04/870,835.74 = 389,230.88/x
  3. Step 3: Cross multiply
    631,045.04x = 870,835.74 × 389,230.88
  4. Step 4: Simplify right side
    631,045.04x = 338,956,161,415.65
  5. Step 5: Solve for x
    x = 338,956,161,415.65/631,045.04
  6. Step 6: Final answer
    x = 537,134.66

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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.