Home / 630,743.04-870,618.48-389,100.96

Finding the Fourth Proportional to 630,743.04, 870,618.48 and 389,100.96

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Solution

The fourth proportional to 630,743.04, 870,618.48 and 389,100.96 is: 537,078.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,743.04 : 870,618.48 = 389,100.96 : x
  2. Step 2: Convert to fraction form
    630,743.04/870,618.48 = 389,100.96/x
  3. Step 3: Cross multiply
    630,743.04x = 870,618.48 × 389,100.96
  4. Step 4: Simplify right side
    630,743.04x = 338,758,486,361.74
  5. Step 5: Solve for x
    x = 338,758,486,361.74/630,743.04
  6. Step 6: Final answer
    x = 537,078.44

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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.