Home / 1,389,632.16-2,084,616.40-490,890

Finding the Fourth Proportional to 1,389,632.16, 2,084,616.40 and 490,890

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Solution

The fourth proportional to 1,389,632.16, 2,084,616.40 and 490,890 is: 736,394.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,632.16 : 2,084,616.40 = 490,890 : x
  2. Step 2: Convert to fraction form
    1,389,632.16/2,084,616.40 = 490,890/x
  3. Step 3: Cross multiply
    1,389,632.16x = 2,084,616.40 × 490,890
  4. Step 4: Simplify right side
    1,389,632.16x = 1,023,317,344,596
  5. Step 5: Solve for x
    x = 1,023,317,344,596/1,389,632.16
  6. Step 6: Final answer
    x = 736,394.40

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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.