Home / 723,900.81-999,030.45-417,990.09

Finding the Fourth Proportional to 723,900.81, 999,030.45 and 417,990.09

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Solution

The fourth proportional to 723,900.81, 999,030.45 and 417,990.09 is: 576,853.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,900.81 : 999,030.45 = 417,990.09 : x
  2. Step 2: Convert to fraction form
    723,900.81/999,030.45 = 417,990.09/x
  3. Step 3: Cross multiply
    723,900.81x = 999,030.45 × 417,990.09
  4. Step 4: Simplify right side
    723,900.81x = 417,584,820,623.14
  5. Step 5: Solve for x
    x = 417,584,820,623.14/723,900.81
  6. Step 6: Final answer
    x = 576,853.64

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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.