Home / 890,437.65-1,335,637.75-216,522.45

Finding the Fourth Proportional to 890,437.65, 1,335,637.75 and 216,522.45

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Solution

The fourth proportional to 890,437.65, 1,335,637.75 and 216,522.45 is: 324,779.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,437.65 : 1,335,637.75 = 216,522.45 : x
  2. Step 2: Convert to fraction form
    890,437.65/1,335,637.75 = 216,522.45/x
  3. Step 3: Cross multiply
    890,437.65x = 1,335,637.75 × 216,522.45
  4. Step 4: Simplify right side
    890,437.65x = 289,195,557,942.49
  5. Step 5: Solve for x
    x = 289,195,557,942.49/890,437.65
  6. Step 6: Final answer
    x = 324,779.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.