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Finding the Fourth Proportional to 639,038.16, 881,866.80 and 352,560.48

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Solution

The fourth proportional to 639,038.16, 881,866.80 and 352,560.48 is: 486,530.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,038.16 : 881,866.80 = 352,560.48 : x
  2. Step 2: Convert to fraction form
    639,038.16/881,866.80 = 352,560.48/x
  3. Step 3: Cross multiply
    639,038.16x = 881,866.80 × 352,560.48
  4. Step 4: Simplify right side
    639,038.16x = 310,911,382,304.06
  5. Step 5: Solve for x
    x = 310,911,382,304.06/639,038.16
  6. Step 6: Final answer
    x = 486,530.23

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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.