Home / 745,132.32-1,116,818.34-318,543.36

Finding the Fourth Proportional to 745,132.32, 1,116,818.34 and 318,543.36

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Solution

The fourth proportional to 745,132.32, 1,116,818.34 and 318,543.36 is: 477,438.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,132.32 : 1,116,818.34 = 318,543.36 : x
  2. Step 2: Convert to fraction form
    745,132.32/1,116,818.34 = 318,543.36/x
  3. Step 3: Cross multiply
    745,132.32x = 1,116,818.34 × 318,543.36
  4. Step 4: Simplify right side
    745,132.32x = 355,755,066,533.22
  5. Step 5: Solve for x
    x = 355,755,066,533.22/745,132.32
  6. Step 6: Final answer
    x = 477,438.78

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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.