Home / 638,423.10-881,018.10-351,943.19

Finding the Fourth Proportional to 638,423.10, 881,018.10 and 351,943.19

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Solution

The fourth proportional to 638,423.10, 881,018.10 and 351,943.19 is: 485,678.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,423.10 : 881,018.10 = 351,943.19 : x
  2. Step 2: Convert to fraction form
    638,423.10/881,018.10 = 351,943.19/x
  3. Step 3: Cross multiply
    638,423.10x = 881,018.10 × 351,943.19
  4. Step 4: Simplify right side
    638,423.10x = 310,068,319,460.47
  5. Step 5: Solve for x
    x = 310,068,319,460.47/638,423.10
  6. Step 6: Final answer
    x = 485,678.42

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Double scale
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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.