Home / 690,963.98-953,534.07-400,747.55

Finding the Fourth Proportional to 690,963.98, 953,534.07 and 400,747.55

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Solution

The fourth proportional to 690,963.98, 953,534.07 and 400,747.55 is: 553,033.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,963.98 : 953,534.07 = 400,747.55 : x
  2. Step 2: Convert to fraction form
    690,963.98/953,534.07 = 400,747.55/x
  3. Step 3: Cross multiply
    690,963.98x = 953,534.07 × 400,747.55
  4. Step 4: Simplify right side
    690,963.98x = 382,126,437,626.36
  5. Step 5: Solve for x
    x = 382,126,437,626.36/690,963.98
  6. Step 6: Final answer
    x = 553,033.81

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1.5x scale

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.