Home / 739,153.69-1,020,031.99-399,621.94

Finding the Fourth Proportional to 739,153.69, 1,020,031.99 and 399,621.94

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Solution

The fourth proportional to 739,153.69, 1,020,031.99 and 399,621.94 is: 551,478.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,153.69 : 1,020,031.99 = 399,621.94 : x
  2. Step 2: Convert to fraction form
    739,153.69/1,020,031.99 = 399,621.94/x
  3. Step 3: Cross multiply
    739,153.69x = 1,020,031.99 × 399,621.94
  4. Step 4: Simplify right side
    739,153.69x = 407,627,162,705.86
  5. Step 5: Solve for x
    x = 407,627,162,705.86/739,153.69
  6. Step 6: Final answer
    x = 551,478.22

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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.