Home / 699,841,478.86-965,810,581.47-402,483,953.20

Finding the Fourth Proportional to 699,841,478.86, 965,810,581.47 and 402,483,953.20

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Solution

The fourth proportional to 699,841,478.86, 965,810,581.47 and 402,483,953.20 is: 555,444,729.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,841,478.86 : 965,810,581.47 = 402,483,953.20 : x
  2. Step 2: Convert to fraction form
    699,841,478.86/965,810,581.47 = 402,483,953.20/x
  3. Step 3: Cross multiply
    699,841,478.86x = 965,810,581.47 × 402,483,953.20
  4. Step 4: Simplify right side
    699,841,478.86x = 388,723,260,872,436,288
  5. Step 5: Solve for x
    x = 388,723,260,872,436,288/699,841,478.86
  6. Step 6: Final answer
    x = 555,444,729.43

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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.