Home / 912,541,012.40-1,259,306,931.87-494,853,186.98

Finding the Fourth Proportional to 912,541,012.40, 1,259,306,931.87 and 494,853,186.98

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Solution

The fourth proportional to 912,541,012.40, 1,259,306,931.87 and 494,853,186.98 is: 682,897,579.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,541,012.40 : 1,259,306,931.87 = 494,853,186.98 : x
  2. Step 2: Convert to fraction form
    912,541,012.40/1,259,306,931.87 = 494,853,186.98/x
  3. Step 3: Cross multiply
    912,541,012.40x = 1,259,306,931.87 × 494,853,186.98
  4. Step 4: Simplify right side
    912,541,012.40x = 623,172,048,621,875,200
  5. Step 5: Solve for x
    x = 623,172,048,621,875,200/912,541,012.40
  6. Step 6: Final answer
    x = 682,897,579.57

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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.