Home / 861,776.80-1,292,870.28-434,262.16

Finding the Fourth Proportional to 861,776.80, 1,292,870.28 and 434,262.16

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Solution

The fourth proportional to 861,776.80, 1,292,870.28 and 434,262.16 is: 651,496.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,776.80 : 1,292,870.28 = 434,262.16 : x
  2. Step 2: Convert to fraction form
    861,776.80/1,292,870.28 = 434,262.16/x
  3. Step 3: Cross multiply
    861,776.80x = 1,292,870.28 × 434,262.16
  4. Step 4: Simplify right side
    861,776.80x = 561,444,640,392.61
  5. Step 5: Solve for x
    x = 561,444,640,392.61/861,776.80
  6. Step 6: Final answer
    x = 651,496.58

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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.