Home / 900,360.90-1,242,605.25-518,462.10

Finding the Fourth Proportional to 900,360.90, 1,242,605.25 and 518,462.10

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Solution

The fourth proportional to 900,360.90, 1,242,605.25 and 518,462.10 is: 715,539.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,360.90 : 1,242,605.25 = 518,462.10 : x
  2. Step 2: Convert to fraction form
    900,360.90/1,242,605.25 = 518,462.10/x
  3. Step 3: Cross multiply
    900,360.90x = 1,242,605.25 × 518,462.10
  4. Step 4: Simplify right side
    900,360.90x = 644,243,727,386.03
  5. Step 5: Solve for x
    x = 644,243,727,386.03/900,360.90
  6. Step 6: Final answer
    x = 715,539.43

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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.