Home / 642,544.02-886,700.12-352,153.35

Finding the Fourth Proportional to 642,544.02, 886,700.12 and 352,153.35

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Solution

The fourth proportional to 642,544.02, 886,700.12 and 352,153.35 is: 485,965.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,544.02 : 886,700.12 = 352,153.35 : x
  2. Step 2: Convert to fraction form
    642,544.02/886,700.12 = 352,153.35/x
  3. Step 3: Cross multiply
    642,544.02x = 886,700.12 × 352,153.35
  4. Step 4: Simplify right side
    642,544.02x = 312,254,415,942.64
  5. Step 5: Solve for x
    x = 312,254,415,942.64/642,544.02
  6. Step 6: Final answer
    x = 485,965.80

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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.