Home / 747,421.20-1,031,440.96-407,889.45

Finding the Fourth Proportional to 747,421.20, 1,031,440.96 and 407,889.45

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Solution

The fourth proportional to 747,421.20, 1,031,440.96 and 407,889.45 is: 562,887.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,421.20 : 1,031,440.96 = 407,889.45 : x
  2. Step 2: Convert to fraction form
    747,421.20/1,031,440.96 = 407,889.45/x
  3. Step 3: Cross multiply
    747,421.20x = 1,031,440.96 × 407,889.45
  4. Step 4: Simplify right side
    747,421.20x = 420,713,885,881.87
  5. Step 5: Solve for x
    x = 420,713,885,881.87/747,421.20
  6. Step 6: Final answer
    x = 562,887.28

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Double scale
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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.