Home / 900,356.45-1,242,531.70-518,506.25

Finding the Fourth Proportional to 900,356.45, 1,242,531.70 and 518,506.25

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Solution

The fourth proportional to 900,356.45, 1,242,531.70 and 518,506.25 is: 715,561.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,356.45 : 1,242,531.70 = 518,506.25 : x
  2. Step 2: Convert to fraction form
    900,356.45/1,242,531.70 = 518,506.25/x
  3. Step 3: Cross multiply
    900,356.45x = 1,242,531.70 × 518,506.25
  4. Step 4: Simplify right side
    900,356.45x = 644,260,444,764.20
  5. Step 5: Solve for x
    x = 644,260,444,764.20/900,356.45
  6. Step 6: Final answer
    x = 715,561.54

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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.