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Finding the Fourth Proportional to 556,990.89, 768,645.57 and 302,340.24

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Solution

The fourth proportional to 556,990.89, 768,645.57 and 302,340.24 is: 417,228.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,990.89 : 768,645.57 = 302,340.24 : x
  2. Step 2: Convert to fraction form
    556,990.89/768,645.57 = 302,340.24/x
  3. Step 3: Cross multiply
    556,990.89x = 768,645.57 × 302,340.24
  4. Step 4: Simplify right side
    556,990.89x = 232,392,486,108.74
  5. Step 5: Solve for x
    x = 232,392,486,108.74/556,990.89
  6. Step 6: Final answer
    x = 417,228.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.