Home / 747,421.56-1,031,443.07-407,889.81

Finding the Fourth Proportional to 747,421.56, 1,031,443.07 and 407,889.81

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Solution

The fourth proportional to 747,421.56, 1,031,443.07 and 407,889.81 is: 562,888.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,421.56 : 1,031,443.07 = 407,889.81 : x
  2. Step 2: Convert to fraction form
    747,421.56/1,031,443.07 = 407,889.81/x
  3. Step 3: Cross multiply
    747,421.56x = 1,031,443.07 × 407,889.81
  4. Step 4: Simplify right side
    747,421.56x = 420,715,115,808.67
  5. Step 5: Solve for x
    x = 420,715,115,808.67/747,421.56
  6. Step 6: Final answer
    x = 562,888.65

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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.