Home / 638,425.10-881,020.86-351,945.19

Finding the Fourth Proportional to 638,425.10, 881,020.86 and 351,945.19

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Solution

The fourth proportional to 638,425.10, 881,020.86 and 351,945.19 is: 485,681.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,425.10 : 881,020.86 = 351,945.19 : x
  2. Step 2: Convert to fraction form
    638,425.10/881,020.86 = 351,945.19/x
  3. Step 3: Cross multiply
    638,425.10x = 881,020.86 × 351,945.19
  4. Step 4: Simplify right side
    638,425.10x = 310,071,053,966.66
  5. Step 5: Solve for x
    x = 310,071,053,966.66/638,425.10
  6. Step 6: Final answer
    x = 485,681.18

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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.