Home / 745,611.40-1,118,762.70-391,025.80

Finding the Fourth Proportional to 745,611.40, 1,118,762.70 and 391,025.80

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Solution

The fourth proportional to 745,611.40, 1,118,762.70 and 391,025.80 is: 586,719.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,611.40 : 1,118,762.70 = 391,025.80 : x
  2. Step 2: Convert to fraction form
    745,611.40/1,118,762.70 = 391,025.80/x
  3. Step 3: Cross multiply
    745,611.40x = 1,118,762.70 × 391,025.80
  4. Step 4: Simplify right side
    745,611.40x = 437,465,079,777.66
  5. Step 5: Solve for x
    x = 437,465,079,777.66/745,611.40
  6. Step 6: Final answer
    x = 586,719.95

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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.