Home / 786,640,052.40-1,085,563,108.80-434,215,949.28

Finding the Fourth Proportional to 786,640,052.40, 1,085,563,108.80 and 434,215,949.28

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Solution

The fourth proportional to 786,640,052.40, 1,085,563,108.80 and 434,215,949.28 is: 599,217,919.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,640,052.40 : 1,085,563,108.80 = 434,215,949.28 : x
  2. Step 2: Convert to fraction form
    786,640,052.40/1,085,563,108.80 = 434,215,949.28/x
  3. Step 3: Cross multiply
    786,640,052.40x = 1,085,563,108.80 × 434,215,949.28
  4. Step 4: Simplify right side
    786,640,052.40x = 471,368,815,790,939,840
  5. Step 5: Solve for x
    x = 471,368,815,790,939,840/786,640,052.40
  6. Step 6: Final answer
    x = 599,217,919.75

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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.