Home / 842,720.15-1,264,206.08-310,200.69

Finding the Fourth Proportional to 842,720.15, 1,264,206.08 and 310,200.69

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Solution

The fourth proportional to 842,720.15, 1,264,206.08 and 310,200.69 is: 465,347.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,720.15 : 1,264,206.08 = 310,200.69 : x
  2. Step 2: Convert to fraction form
    842,720.15/1,264,206.08 = 310,200.69/x
  3. Step 3: Cross multiply
    842,720.15x = 1,264,206.08 × 310,200.69
  4. Step 4: Simplify right side
    842,720.15x = 392,157,596,723.31
  5. Step 5: Solve for x
    x = 392,157,596,723.31/842,720.15
  6. Step 6: Final answer
    x = 465,347.36

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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.