Home / 738,178.73-1,018,686.64-398,646.98

Finding the Fourth Proportional to 738,178.73, 1,018,686.64 and 398,646.98

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Solution

The fourth proportional to 738,178.73, 1,018,686.64 and 398,646.98 is: 550,132.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,178.73 : 1,018,686.64 = 398,646.98 : x
  2. Step 2: Convert to fraction form
    738,178.73/1,018,686.64 = 398,646.98/x
  3. Step 3: Cross multiply
    738,178.73x = 1,018,686.64 × 398,646.98
  4. Step 4: Simplify right side
    738,178.73x = 406,096,347,508.91
  5. Step 5: Solve for x
    x = 406,096,347,508.91/738,178.73
  6. Step 6: Final answer
    x = 550,132.83

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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.