Home / 723,476.80-1,085,215.20-643,297.60

Finding the Fourth Proportional to 723,476.80, 1,085,215.20 and 643,297.60

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Solution

The fourth proportional to 723,476.80, 1,085,215.20 and 643,297.60 is: 964,946.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,476.80 : 1,085,215.20 = 643,297.60 : x
  2. Step 2: Convert to fraction form
    723,476.80/1,085,215.20 = 643,297.60/x
  3. Step 3: Cross multiply
    723,476.80x = 1,085,215.20 × 643,297.60
  4. Step 4: Simplify right side
    723,476.80x = 698,116,333,643.52
  5. Step 5: Solve for x
    x = 698,116,333,643.52/723,476.80
  6. Step 6: Final answer
    x = 964,946.40

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1.5x scale

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.