Home / 687,613.70-1,031,857.95-403,303.70

Finding the Fourth Proportional to 687,613.70, 1,031,857.95 and 403,303.70

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Solution

The fourth proportional to 687,613.70, 1,031,857.95 and 403,303.70 is: 605,212.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,613.70 : 1,031,857.95 = 403,303.70 : x
  2. Step 2: Convert to fraction form
    687,613.70/1,031,857.95 = 403,303.70/x
  3. Step 3: Cross multiply
    687,613.70x = 1,031,857.95 × 403,303.70
  4. Step 4: Simplify right side
    687,613.70x = 416,152,129,109.42
  5. Step 5: Solve for x
    x = 416,152,129,109.42/687,613.70
  6. Step 6: Final answer
    x = 605,212.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.