Home / 1,138,411.19-1,707,616.77-428,598.47

Finding the Fourth Proportional to 1,138,411.19, 1,707,616.77 and 428,598.47

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Solution

The fourth proportional to 1,138,411.19, 1,707,616.77 and 428,598.47 is: 642,897.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,411.19 : 1,707,616.77 = 428,598.47 : x
  2. Step 2: Convert to fraction form
    1,138,411.19/1,707,616.77 = 428,598.47/x
  3. Step 3: Cross multiply
    1,138,411.19x = 1,707,616.77 × 428,598.47
  4. Step 4: Simplify right side
    1,138,411.19x = 731,881,926,430.26
  5. Step 5: Solve for x
    x = 731,881,926,430.26/1,138,411.19
  6. Step 6: Final answer
    x = 642,897.69

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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.