Home / 642,811.40-964,044.30-193,531.40

Finding the Fourth Proportional to 642,811.40, 964,044.30 and 193,531.40

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Solution

The fourth proportional to 642,811.40, 964,044.30 and 193,531.40 is: 290,245.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,811.40 : 964,044.30 = 193,531.40 : x
  2. Step 2: Convert to fraction form
    642,811.40/964,044.30 = 193,531.40/x
  3. Step 3: Cross multiply
    642,811.40x = 964,044.30 × 193,531.40
  4. Step 4: Simplify right side
    642,811.40x = 186,572,843,041.02
  5. Step 5: Solve for x
    x = 186,572,843,041.02/642,811.40
  6. Step 6: Final answer
    x = 290,245.08

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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.