Home / 687,681.80-1,029,554.40-608,949.80

Finding the Fourth Proportional to 687,681.80, 1,029,554.40 and 608,949.80

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Solution

The fourth proportional to 687,681.80, 1,029,554.40 and 608,949.80 is: 911,681.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,681.80 : 1,029,554.40 = 608,949.80 : x
  2. Step 2: Convert to fraction form
    687,681.80/1,029,554.40 = 608,949.80/x
  3. Step 3: Cross multiply
    687,681.80x = 1,029,554.40 × 608,949.80
  4. Step 4: Simplify right side
    687,681.80x = 626,946,945,969.12
  5. Step 5: Solve for x
    x = 626,946,945,969.12/687,681.80
  6. Step 6: Final answer
    x = 911,681.75

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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.