Home / 900,590.31-1,242,643.23-513,388.80

Finding the Fourth Proportional to 900,590.31, 1,242,643.23 and 513,388.80

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Solution

The fourth proportional to 900,590.31, 1,242,643.23 and 513,388.80 is: 708,378.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,590.31 : 1,242,643.23 = 513,388.80 : x
  2. Step 2: Convert to fraction form
    900,590.31/1,242,643.23 = 513,388.80/x
  3. Step 3: Cross multiply
    900,590.31x = 1,242,643.23 × 513,388.80
  4. Step 4: Simplify right side
    900,590.31x = 637,959,116,677.82
  5. Step 5: Solve for x
    x = 637,959,116,677.82/900,590.31
  6. Step 6: Final answer
    x = 708,378.84

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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.