Home / 641,943.64-885,886.50-355,482.28

Finding the Fourth Proportional to 641,943.64, 885,886.50 and 355,482.28

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Solution

The fourth proportional to 641,943.64, 885,886.50 and 355,482.28 is: 490,567.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,943.64 : 885,886.50 = 355,482.28 : x
  2. Step 2: Convert to fraction form
    641,943.64/885,886.50 = 355,482.28/x
  3. Step 3: Cross multiply
    641,943.64x = 885,886.50 × 355,482.28
  4. Step 4: Simplify right side
    641,943.64x = 314,916,952,841.22
  5. Step 5: Solve for x
    x = 314,916,952,841.22/641,943.64
  6. Step 6: Final answer
    x = 490,567.91

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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.