Home / 708,640.17-977,922.75-386,350.18

Finding the Fourth Proportional to 708,640.17, 977,922.75 and 386,350.18

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Solution

The fourth proportional to 708,640.17, 977,922.75 and 386,350.18 is: 533,162.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,640.17 : 977,922.75 = 386,350.18 : x
  2. Step 2: Convert to fraction form
    708,640.17/977,922.75 = 386,350.18/x
  3. Step 3: Cross multiply
    708,640.17x = 977,922.75 × 386,350.18
  4. Step 4: Simplify right side
    708,640.17x = 377,820,628,983.18
  5. Step 5: Solve for x
    x = 377,820,628,983.18/708,640.17
  6. Step 6: Final answer
    x = 533,162.87

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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.