Home / 913,508.04-1,260,643.59-505,638

Finding the Fourth Proportional to 913,508.04, 1,260,643.59 and 505,638

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Solution

The fourth proportional to 913,508.04, 1,260,643.59 and 505,638 is: 697,781.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,508.04 : 1,260,643.59 = 505,638 : x
  2. Step 2: Convert to fraction form
    913,508.04/1,260,643.59 = 505,638/x
  3. Step 3: Cross multiply
    913,508.04x = 1,260,643.59 × 505,638
  4. Step 4: Simplify right side
    913,508.04x = 637,429,303,560.42
  5. Step 5: Solve for x
    x = 637,429,303,560.42/913,508.04
  6. Step 6: Final answer
    x = 697,781.82

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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.