Home / 900,318.64-1,242,301.68-518,271.58

Finding the Fourth Proportional to 900,318.64, 1,242,301.68 and 518,271.58

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Solution

The fourth proportional to 900,318.64, 1,242,301.68 and 518,271.58 is: 715,135.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,318.64 : 1,242,301.68 = 518,271.58 : x
  2. Step 2: Convert to fraction form
    900,318.64/1,242,301.68 = 518,271.58/x
  3. Step 3: Cross multiply
    900,318.64x = 1,242,301.68 × 518,271.58
  4. Step 4: Simplify right side
    900,318.64x = 643,849,654,530.25
  5. Step 5: Solve for x
    x = 643,849,654,530.25/900,318.64
  6. Step 6: Final answer
    x = 715,135.32

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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.