Home / 900,185.70-1,242,373.77-518,228.58

Finding the Fourth Proportional to 900,185.70, 1,242,373.77 and 518,228.58

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Solution

The fourth proportional to 900,185.70, 1,242,373.77 and 518,228.58 is: 715,223.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,185.70 : 1,242,373.77 = 518,228.58 : x
  2. Step 2: Convert to fraction form
    900,185.70/1,242,373.77 = 518,228.58/x
  3. Step 3: Cross multiply
    900,185.70x = 1,242,373.77 × 518,228.58
  4. Step 4: Simplify right side
    900,185.70x = 643,833,594,656.35
  5. Step 5: Solve for x
    x = 643,833,594,656.35/900,185.70
  6. Step 6: Final answer
    x = 715,223.09

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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.