Home / 900,209.70-1,242,406.89-518,252.58

Finding the Fourth Proportional to 900,209.70, 1,242,406.89 and 518,252.58

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Solution

The fourth proportional to 900,209.70, 1,242,406.89 and 518,252.58 is: 715,256.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,209.70 : 1,242,406.89 = 518,252.58 : x
  2. Step 2: Convert to fraction form
    900,209.70/1,242,406.89 = 518,252.58/x
  3. Step 3: Cross multiply
    900,209.70x = 1,242,406.89 × 518,252.58
  4. Step 4: Simplify right side
    900,209.70x = 643,880,576,152.28
  5. Step 5: Solve for x
    x = 643,880,576,152.28/900,209.70
  6. Step 6: Final answer
    x = 715,256.21

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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.