Home / 912,541,012.15-1,259,306,931.53-494,853,186.73

Finding the Fourth Proportional to 912,541,012.15, 1,259,306,931.53 and 494,853,186.73

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Solution

The fourth proportional to 912,541,012.15, 1,259,306,931.53 and 494,853,186.73 is: 682,897,579.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,541,012.15 : 1,259,306,931.53 = 494,853,186.73 : x
  2. Step 2: Convert to fraction form
    912,541,012.15/1,259,306,931.53 = 494,853,186.73/x
  3. Step 3: Cross multiply
    912,541,012.15x = 1,259,306,931.53 × 494,853,186.73
  4. Step 4: Simplify right side
    912,541,012.15x = 623,172,048,133,175,936
  5. Step 5: Solve for x
    x = 623,172,048,133,175,936/912,541,012.15
  6. Step 6: Final answer
    x = 682,897,579.22

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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.