Home / 738,179.73-1,018,688.02-398,647.98

Finding the Fourth Proportional to 738,179.73, 1,018,688.02 and 398,647.98

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Solution

The fourth proportional to 738,179.73, 1,018,688.02 and 398,647.98 is: 550,134.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,179.73 : 1,018,688.02 = 398,647.98 : x
  2. Step 2: Convert to fraction form
    738,179.73/1,018,688.02 = 398,647.98/x
  3. Step 3: Cross multiply
    738,179.73x = 1,018,688.02 × 398,647.98
  4. Step 4: Simplify right side
    738,179.73x = 406,097,921,423.20
  5. Step 5: Solve for x
    x = 406,097,921,423.20/738,179.73
  6. Step 6: Final answer
    x = 550,134.21

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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.