Home / 723,185.48-998,043.81-400,909.16

Finding the Fourth Proportional to 723,185.48, 998,043.81 and 400,909.16

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Solution

The fourth proportional to 723,185.48, 998,043.81 and 400,909.16 is: 553,281.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,185.48 : 998,043.81 = 400,909.16 : x
  2. Step 2: Convert to fraction form
    723,185.48/998,043.81 = 400,909.16/x
  3. Step 3: Cross multiply
    723,185.48x = 998,043.81 × 400,909.16
  4. Step 4: Simplify right side
    723,185.48x = 400,124,905,510.30
  5. Step 5: Solve for x
    x = 400,124,905,510.30/723,185.48
  6. Step 6: Final answer
    x = 553,281.17

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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.