Home / 1,107,622,138.72-1,528,989,195.60-690,140,689.56

Finding the Fourth Proportional to 1,107,622,138.72, 1,528,989,195.60 and 690,140,689.56

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Solution

The fourth proportional to 1,107,622,138.72, 1,528,989,195.60 and 690,140,689.56 is: 952,687,402.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,622,138.72 : 1,528,989,195.60 = 690,140,689.56 : x
  2. Step 2: Convert to fraction form
    1,107,622,138.72/1,528,989,195.60 = 690,140,689.56/x
  3. Step 3: Cross multiply
    1,107,622,138.72x = 1,528,989,195.60 × 690,140,689.56
  4. Step 4: Simplify right side
    1,107,622,138.72x = 1,055,217,657,781,173,504
  5. Step 5: Solve for x
    x = 1,055,217,657,781,173,504/1,107,622,138.72
  6. Step 6: Final answer
    x = 952,687,402.04

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Double scale
Find fourth proportional to 1,107,622,139.72, 1,528,989,196.98 and 690,140,690.56
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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.