Home / 974,912,856.11-1,345,026,669.68-640,565,456.03

Finding the Fourth Proportional to 974,912,856.11, 1,345,026,669.68 and 640,565,456.03

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Solution

The fourth proportional to 974,912,856.11, 1,345,026,669.68 and 640,565,456.03 is: 883,748,343.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    974,912,856.11 : 1,345,026,669.68 = 640,565,456.03 : x
  2. Step 2: Convert to fraction form
    974,912,856.11/1,345,026,669.68 = 640,565,456.03/x
  3. Step 3: Cross multiply
    974,912,856.11x = 1,345,026,669.68 × 640,565,456.03
  4. Step 4: Simplify right side
    974,912,856.11x = 861,577,622,026,153,344
  5. Step 5: Solve for x
    x = 861,577,622,026,153,344/974,912,856.11
  6. Step 6: Final answer
    x = 883,748,343.90

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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.