Home / 786,981,429.76-1,086,130,126.56-456,956,567.68

Finding the Fourth Proportional to 786,981,429.76, 1,086,130,126.56 and 456,956,567.68

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Solution

The fourth proportional to 786,981,429.76, 1,086,130,126.56 and 456,956,567.68 is: 630,655,662.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,981,429.76 : 1,086,130,126.56 = 456,956,567.68 : x
  2. Step 2: Convert to fraction form
    786,981,429.76/1,086,130,126.56 = 456,956,567.68/x
  3. Step 3: Cross multiply
    786,981,429.76x = 1,086,130,126.56 × 456,956,567.68
  4. Step 4: Simplify right side
    786,981,429.76x = 496,314,294,686,701,568
  5. Step 5: Solve for x
    x = 496,314,294,686,701,568/786,981,429.76
  6. Step 6: Final answer
    x = 630,655,662.15

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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.