Home / 638,573.12-956,775.75-385,321.46

Finding the Fourth Proportional to 638,573.12, 956,775.75 and 385,321.46

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Solution

The fourth proportional to 638,573.12, 956,775.75 and 385,321.46 is: 577,328.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,573.12 : 956,775.75 = 385,321.46 : x
  2. Step 2: Convert to fraction form
    638,573.12/956,775.75 = 385,321.46/x
  3. Step 3: Cross multiply
    638,573.12x = 956,775.75 × 385,321.46
  4. Step 4: Simplify right side
    638,573.12x = 368,666,222,653.76
  5. Step 5: Solve for x
    x = 368,666,222,653.76/638,573.12
  6. Step 6: Final answer
    x = 577,328.13

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1.5x scale

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.