Home / 670,981.55-1,005,438.64-310,930.25

Finding the Fourth Proportional to 670,981.55, 1,005,438.64 and 310,930.25

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Solution

The fourth proportional to 670,981.55, 1,005,438.64 and 310,930.25 is: 465,916.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,981.55 : 1,005,438.64 = 310,930.25 : x
  2. Step 2: Convert to fraction form
    670,981.55/1,005,438.64 = 310,930.25/x
  3. Step 3: Cross multiply
    670,981.55x = 1,005,438.64 × 310,930.25
  4. Step 4: Simplify right side
    670,981.55x = 312,621,287,694.86
  5. Step 5: Solve for x
    x = 312,621,287,694.86/670,981.55
  6. Step 6: Final answer
    x = 465,916.37

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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.