Home / 913,987.45-1,261,315.95-506,088.51

Finding the Fourth Proportional to 913,987.45, 1,261,315.95 and 506,088.51

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Solution

The fourth proportional to 913,987.45, 1,261,315.95 and 506,088.51 is: 698,409.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,987.45 : 1,261,315.95 = 506,088.51 : x
  2. Step 2: Convert to fraction form
    913,987.45/1,261,315.95 = 506,088.51/x
  3. Step 3: Cross multiply
    913,987.45x = 1,261,315.95 × 506,088.51
  4. Step 4: Simplify right side
    913,987.45x = 638,337,505,993.72
  5. Step 5: Solve for x
    x = 638,337,505,993.72/913,987.45
  6. Step 6: Final answer
    x = 698,409.49

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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.