Home / 638,088.68-880,502.22-376,403.20

Finding the Fourth Proportional to 638,088.68, 880,502.22 and 376,403.20

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Solution

The fourth proportional to 638,088.68, 880,502.22 and 376,403.20 is: 519,400.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,088.68 : 880,502.22 = 376,403.20 : x
  2. Step 2: Convert to fraction form
    638,088.68/880,502.22 = 376,403.20/x
  3. Step 3: Cross multiply
    638,088.68x = 880,502.22 × 376,403.20
  4. Step 4: Simplify right side
    638,088.68x = 331,423,853,215.10
  5. Step 5: Solve for x
    x = 331,423,853,215.10/638,088.68
  6. Step 6: Final answer
    x = 519,400.93

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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.