Home / 378,756,820.80-523,045,392.12-358,122,436.92

Finding the Fourth Proportional to 378,756,820.80, 523,045,392.12 and 358,122,436.92

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Solution

The fourth proportional to 378,756,820.80, 523,045,392.12 and 358,122,436.92 is: 494,550,276.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,756,820.80 : 523,045,392.12 = 358,122,436.92 : x
  2. Step 2: Convert to fraction form
    378,756,820.80/523,045,392.12 = 358,122,436.92/x
  3. Step 3: Cross multiply
    378,756,820.80x = 523,045,392.12 × 358,122,436.92
  4. Step 4: Simplify right side
    378,756,820.80x = 187,314,290,445,791,360
  5. Step 5: Solve for x
    x = 187,314,290,445,791,360/378,756,820.80
  6. Step 6: Final answer
    x = 494,550,276.48

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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.