Home / 900,404.64-1,242,420.48-518,357.60

Finding the Fourth Proportional to 900,404.64, 1,242,420.48 and 518,357.60

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Solution

The fourth proportional to 900,404.64, 1,242,420.48 and 518,357.60 is: 715,254.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,404.64 : 1,242,420.48 = 518,357.60 : x
  2. Step 2: Convert to fraction form
    900,404.64/1,242,420.48 = 518,357.60/x
  3. Step 3: Cross multiply
    900,404.64x = 1,242,420.48 × 518,357.60
  4. Step 4: Simplify right side
    900,404.64x = 644,018,098,203.65
  5. Step 5: Solve for x
    x = 644,018,098,203.65/900,404.64
  6. Step 6: Final answer
    x = 715,254.09

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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.