Home / 747,307.72-1,031,276.06-407,781.64

Finding the Fourth Proportional to 747,307.72, 1,031,276.06 and 407,781.64

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Solution

The fourth proportional to 747,307.72, 1,031,276.06 and 407,781.64 is: 562,733.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,307.72 : 1,031,276.06 = 407,781.64 : x
  2. Step 2: Convert to fraction form
    747,307.72/1,031,276.06 = 407,781.64/x
  3. Step 3: Cross multiply
    747,307.72x = 1,031,276.06 × 407,781.64
  4. Step 4: Simplify right side
    747,307.72x = 420,535,443,039.54
  5. Step 5: Solve for x
    x = 420,535,443,039.54/747,307.72
  6. Step 6: Final answer
    x = 562,733.97

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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.