Home / 910,700,976.42-1,256,767,767.93-493,013,261.72

Finding the Fourth Proportional to 910,700,976.42, 1,256,767,767.93 and 493,013,261.72

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Solution

The fourth proportional to 910,700,976.42, 1,256,767,767.93 and 493,013,261.72 is: 680,358,528.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,700,976.42 : 1,256,767,767.93 = 493,013,261.72 : x
  2. Step 2: Convert to fraction form
    910,700,976.42/1,256,767,767.93 = 493,013,261.72/x
  3. Step 3: Cross multiply
    910,700,976.42x = 1,256,767,767.93 × 493,013,261.72
  4. Step 4: Simplify right side
    910,700,976.42x = 619,603,176,485,449,472
  5. Step 5: Solve for x
    x = 619,603,176,485,449,472/910,700,976.42
  6. Step 6: Final answer
    x = 680,358,528.79

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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.