Home / 745,109.04-1,117,775.34-345,790.79

Finding the Fourth Proportional to 745,109.04, 1,117,775.34 and 345,790.79

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Solution

The fourth proportional to 745,109.04, 1,117,775.34 and 345,790.79 is: 518,738.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,109.04 : 1,117,775.34 = 345,790.79 : x
  2. Step 2: Convert to fraction form
    745,109.04/1,117,775.34 = 345,790.79/x
  3. Step 3: Cross multiply
    745,109.04x = 1,117,775.34 × 345,790.79
  4. Step 4: Simplify right side
    745,109.04x = 386,516,412,272.24
  5. Step 5: Solve for x
    x = 386,516,412,272.24/745,109.04
  6. Step 6: Final answer
    x = 518,738.05

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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.