Home / 747,421.52-1,031,441.40-407,889.77

Finding the Fourth Proportional to 747,421.52, 1,031,441.40 and 407,889.77

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Solution

The fourth proportional to 747,421.52, 1,031,441.40 and 407,889.77 is: 562,887.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,421.52 : 1,031,441.40 = 407,889.77 : x
  2. Step 2: Convert to fraction form
    747,421.52/1,031,441.40 = 407,889.77/x
  3. Step 3: Cross multiply
    747,421.52x = 1,031,441.40 × 407,889.77
  4. Step 4: Simplify right side
    747,421.52x = 420,714,390,257.27
  5. Step 5: Solve for x
    x = 420,714,390,257.27/747,421.52
  6. Step 6: Final answer
    x = 562,887.72

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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.