Home / 745,353.48-1,028,612.85-418,723.80

Finding the Fourth Proportional to 745,353.48, 1,028,612.85 and 418,723.80

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Solution

The fourth proportional to 745,353.48, 1,028,612.85 and 418,723.80 is: 577,852.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,353.48 : 1,028,612.85 = 418,723.80 : x
  2. Step 2: Convert to fraction form
    745,353.48/1,028,612.85 = 418,723.80/x
  3. Step 3: Cross multiply
    745,353.48x = 1,028,612.85 × 418,723.80
  4. Step 4: Simplify right side
    745,353.48x = 430,704,681,280.83
  5. Step 5: Solve for x
    x = 430,704,681,280.83/745,353.48
  6. Step 6: Final answer
    x = 577,852.92

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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.